docs: fix type of vim.validate value

runtime/doc/lua.txt

@@ -2477,7 +2477,7 @@ vim.validate({name}, {value}, {validator}, {optional}, {message})
 
     Parameters: ~
       • {name}       (`string`) Argument name
-      • {value}      (`string`) Argument value
+      • {value}      (`any`) Argument value
       • {validator}  (`vim.validate.Validator`)
                      • (`string|string[]`): Any value that can be returned
                        from |lua-type()| in addition to `'callable'`:

runtime/lua/vim/shared.lua

@@ -1013,7 +1013,7 @@ do
   --- best performance.
   ---
   --- @param name string Argument name
-  --- @param value string Argument value
+  --- @param value any Argument value
   --- @param validator vim.validate.Validator
   ---   - (`string|string[]`): Any value that can be returned from |lua-type()| in addition to
   ---     `'callable'`: `'boolean'`, `'callable'`, `'function'`, `'nil'`, `'number'`, `'string'`, `'table'`,