docs: also change "vimL" and "viml" to "Vimscript" (#24414)

src/nvim/api/buffer.c

@@ -1250,8 +1250,8 @@ ArrayOf(Integer, 2) nvim_buf_get_mark(Buffer buffer, String name, Error *err)
 /// Otherwise a temporary scratch window (called the "autocmd window" for
 /// historical reasons) will be used.
 ///
-/// This is useful e.g. to call vimL functions that only work with the current
-/// buffer/window currently, like |termopen()|.
+/// This is useful e.g. to call Vimscript functions that only work with the
+/// current buffer/window currently, like |termopen()|.
 ///
 /// @param buffer     Buffer handle, or 0 for current buffer
 /// @param fun        Function to call inside the buffer (currently Lua callable

src/nvim/api/vimscript.c

@@ -402,7 +402,7 @@ typedef kvec_withinit_t(ExprASTConvStackItem, 16) ExprASTConvStack;
 ///                    stringified without "kExprNode" prefix.
 ///          - "start": a pair [line, column] describing where node is "started"
 ///                     where "line" is always 0 (will not be 0 if you will be
-///                     using nvim_parse_viml() on e.g. ":let", but that is not
+///                     using this API on e.g. ":let", but that is not
 ///                     present yet). Both elements are Integers.
 ///          - "len": “length” of the node. This and "start" are there for
 ///                   debugging purposes primary (debugging parser and providing

src/nvim/lua/executor.c

@@ -1139,7 +1139,7 @@ static bool viml_func_is_fast(const char *name)
   if (fdef) {
     return fdef->fast;
   }
-  // Not a vimL function
+  // Not a Vimscript function
   return false;
 }
 
@@ -1149,7 +1149,7 @@ int nlua_call(lua_State *lstate)
   size_t name_len;
   const char *name = luaL_checklstring(lstate, 1, &name_len);
   if (!nlua_is_deferred_safe() && !viml_func_is_fast(name)) {
-    return luaL_error(lstate, e_luv_api_disabled, "vimL function");
+    return luaL_error(lstate, e_luv_api_disabled, "Vimscript function");
   }
 
   int nargs = lua_gettop(lstate) - 1;