docs: fix typos (#19024)

Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Co-authored-by: Valery Viktorovsky <viktorovsky@gmail.com>

runtime/doc/api.txt

@@ -1968,7 +1968,7 @@ nvim_buf_get_option({buffer}, {name})                  *nvim_buf_get_option()*
                     Option value
 
 nvim_buf_set_option({buffer}, {name}, {value})         *nvim_buf_set_option()*
-                Sets a buffer option value. Passing 'nil' as value deletes the
+                Sets a buffer option value. Passing `nil` as value deletes the
                 option (only works if there's a global fallback)
 
                 Parameters: ~
@@ -2075,7 +2075,7 @@ nvim_win_get_option({window}, {name})                  *nvim_win_get_option()*
                     Option value
 
 nvim_win_set_option({window}, {name}, {value})         *nvim_win_set_option()*
-                Sets a window option value. Passing 'nil' as value deletes the
+                Sets a window option value. Passing `nil` as value deletes the
                 option (only works if there's a global fallback)
 
                 Parameters: ~

runtime/doc/builtin.txt

@@ -6674,7 +6674,6 @@ setbufline({buf}, {lnum}, {text})			*setbufline()*
 		|bufload()| if needed.
 
 		To insert lines use |appendbufline()|.
-		Any text properties in {lnum} are cleared.
 
 		{text} can be a string to set one line, or a list of strings
 		to set multiple lines.  If the list extends below the last
@@ -8012,10 +8011,10 @@ synIDattr({synID}, {what} [, {mode}])			*synIDattr()*
 		The result is a String, which is the {what} attribute of
 		syntax ID {synID}.  This can be used to obtain information
 		about a syntax item.
-		{mode} can be "gui", "cterm" or "term", to get the attributes
+		{mode} can be "gui" or "cterm", to get the attributes
 		for that mode.  When {mode} is omitted, or an invalid value is
 		used, the attributes for the currently active highlighting are
-		used (GUI, cterm or term).
+		used (GUI or cterm).
 		Use synIDtrans() to follow linked highlight groups.
 		{what}		result
 		"name"		the name of the syntax item
@@ -8043,12 +8042,12 @@ synIDattr({synID}, {what} [, {mode}])			*synIDattr()*
 		"strikethrough"	"1" if struckthrough
 		"nocombine"	"1" if nocombine
 
+		Returns an empty string on error.
+
 		Example (echoes the color of the syntax item under the
 		cursor): >
 	:echo synIDattr(synIDtrans(synID(line("."), col("."), 1)), "fg")
 <
-		Returns an empty string on error.
-
 		Can also be used as a |method|: >
 	:echo synID(line("."), col("."), 1)->synIDtrans()->synIDattr("fg")
 

runtime/doc/options.txt

@@ -3571,7 +3571,7 @@ A jump table for the options with a short description can be found at |Q_op|.
 	help.  (Note that previously setting the global option to the empty
 	value did this, which is now deprecated.)
 	When the first character is ":", the command is invoked as a Vim
-	Ex command with [count] added as an argument if it is not zero.
+	Ex command prefixed with [count].
 	When "man" or "man -s" is used, Vim will automatically translate
 	a [count] for the "K" command to a section number.
 	See |option-backslash| about including spaces and backslashes.
@@ -4210,14 +4210,14 @@ A jump table for the options with a short description can be found at |Q_op|.
 
 	The 'mousemodel' option is set by the |:behave| command.
 
-					*mousescroll*
+					*'mousescroll'*
 'mousescroll'		string	(default "ver:3,hor:6")
 			global
 	This option controls the number of lines / columns to scroll by when
 	scrolling with a mouse. The option is a comma separated list of parts.
 	Each part consists of a direction and a count as follows:
 		direction:count,direction:count
-	Direction is one of either "hor" or "ver", "hor" controls horizontal
+	Direction is one of either "hor" or "ver". "hor" controls horizontal
 	scrolling and "ver" controls vertical scrolling. Count sets the amount
 	to scroll by for the given direction, it should be a non negative
 	integer. Each direction should be set at most once. If a direction

runtime/doc/usr_06.txt

@@ -135,7 +135,6 @@ You could also write your own color scheme.  This is how you do it:
 
 2. Edit the color scheme file.  These entries are useful:
 
-	term		attributes in a B&W terminal
 	cterm		attributes in a color terminal
 	ctermfg		foreground color in a color terminal
 	ctermbg		background color in a color terminal

src/nvim/api/options.c

@@ -280,7 +280,7 @@ Object nvim_buf_get_option(Buffer buffer, String name, Error *err)
   return get_option_from(buf, SREQ_BUF, name, err);
 }
 
-/// Sets a buffer option value. Passing 'nil' as value deletes the option (only
+/// Sets a buffer option value. Passing `nil` as value deletes the option (only
 /// works if there's a global fallback)
 ///
 /// @param channel_id
@@ -318,7 +318,7 @@ Object nvim_win_get_option(Window window, String name, Error *err)
   return get_option_from(win, SREQ_WIN, name, err);
 }
 
-/// Sets a window option value. Passing 'nil' as value deletes the option(only
+/// Sets a window option value. Passing `nil` as value deletes the option (only
 /// works if there's a global fallback)
 ///
 /// @param channel_id

src/nvim/fileio.c

@@ -5270,7 +5270,6 @@ void forward_slash(char_u *fname)
     return;
   }
   for (p = fname; *p != NUL; p++) {
-    // The Big5 encoding can have '\' in the trail byte.
     if (*p == '\\') {
       *p = '/';
     }

src/nvim/lua/executor.c

@@ -1686,7 +1686,7 @@ int nlua_expand_pat(expand_T *xp, char_u *pat, int *num_results, char_u ***resul
   lua_getfield(lstate, -1, "_expand_pat");
   luaL_checktype(lstate, -1, LUA_TFUNCTION);
 
-  // [ vim, vim._on_key, buf ]
+  // [ vim, vim._expand_pat, buf ]
   lua_pushlstring(lstate, (const char *)pat, STRLEN(pat));
 
   if (nlua_pcall(lstate, 1, 2) != 0) {