Update website/docs/r/repository.html.markdown

Co-authored-by: Usman <[email protected]>

Author: BartolottiLuca

website/docs/r/repository.html.markdown

@@ -136,7 +136,7 @@ The `pages` block supports the following:
 
 * `cname` - (Optional) The custom domain for the repository. This can only be set after the repository has been created.
 
-* `public` - (Optional) Whether the rendered GitHub Pages site is publicly availabe.
+* `public` - (Optional) Whether the rendered GitHub Pages site is publicly available.
 
 #### GitHub Pages Source ####