docs: misc, editorconfig

fix https://github.com/neovim/neovim/issues/36858

runtime/doc/lua.txt

@@ -703,11 +703,12 @@ vim.rpcnotify({channel}, {method}, {...})                    *vim.rpcnotify()*
       • {...}      (`any?`)
 
 vim.rpcrequest({channel}, {method}, {...})                  *vim.rpcrequest()*
-    Sends a request to {channel} to invoke {method} via |RPC| and blocks until
-    a response is received.
+    Invokes |RPC| `method` on `channel` and blocks until a response is
+    received.
 
-    Note: NIL values as part of the return value is represented as |vim.NIL|
-    special value
+    Note: Msgpack NIL values in the response are represented as |vim.NIL|.
+
+    Example: see |nvim_exec_lua()|
 
     Parameters: ~
       • {channel}  (`integer`)
@@ -2091,6 +2092,9 @@ vim.tbl_get({o}, {...})                                        *vim.tbl_get()*
     Return: ~
         (`any`) Nested value indexed by key (if it exists), else nil
 
+    See also: ~
+      • |unpack()|
+
 vim.tbl_isempty({t})                                       *vim.tbl_isempty()*
     Checks if a table is empty.