update codeowners (#1817)

Author: Matthew Sweeney

.github/CODEOWNERS

@@ -15,4 +15,4 @@ pages/docs/v2/advanced/builders.mdx          @leo @AndyBitz @styfle @joecohens @
 pages/docs/api/                              @anatrajkovska @arunoda @javivelasco @mglagola @chibicode
 pages/docs/integrations/                     @arunoda @chibicode
 pages/docs/error/                            @juancampa @dav-is @joecohens @chibicode
-pages/guides/                                @timothyis @msweeneydev @coetry @chibicode
+pages/guides/                                @timothyis @mcsdevv @coetry @chibicode