vim-patch:d353d27: runtime(doc): restore description of "$" in col() and virtcol() (vim/vim#14981)

These are different from line() and getpos().

d353d27820

runtime/lua/vim/_meta/vimfn.lua

@@ -913,6 +913,8 @@ function vim.fn.clearmatches(win) end
 --- The result is a Number, which is the byte index of the column
 --- position given with {expr}.
 --- For accepted positions see |getpos()|.
+--- When {expr} is "$", it means the end of the cursor line, so
+--- the result is the number of bytes in the cursor line plus one.
 --- Additionally {expr} can be [lnum, col]: a |List| with the line
 --- and column number. Most useful when the column is "$", to get
 --- the last column of a specific line.  When "lnum" or "col" is
@@ -3332,7 +3334,7 @@ function vim.fn.getpid() end
 ---     .      The cursor position.
 ---     $      The last line in the current buffer.
 ---     'x      Position of mark x (if the mark is not set, 0 is
----       returned).
+---       returned for all values).
 ---     w0      First line visible in current window (one if the
 ---       display isn't updated, e.g. in silent Ex mode).
 ---     w$      Last line visible in current window (this is one
@@ -3382,8 +3384,8 @@ function vim.fn.getpid() end
 ---   let save_a_mark = getpos("'a")
 ---   " ...
 ---   call setpos("'a", save_a_mark)
----
---- <Also see |getcharpos()|, |getcurpos()| and |setpos()|.
+--- <
+--- Also see |getcharpos()|, |getcurpos()| and |setpos()|.
 ---
 --- @param expr string
 --- @return integer[]
@@ -10416,6 +10418,8 @@ function vim.fn.values(dict) end
 --- For the byte position use |col()|.
 ---
 --- For the use of {expr} see |getpos()| and |col()|.
+--- When {expr} is "$", it means the end of the cursor line, so
+--- the result is the number of cells in the cursor line plus one.
 ---
 --- When 'virtualedit' is used {expr} can be [lnum, col, off],
 --- where "off" is the offset in screen columns from the start of