Update README.md (typo)

Author: gbraad

Diff for: README.md

@@ -21,7 +21,7 @@ $ podman run --rm -v $PWD:/workspace ghcr.io/gbraad-redhat/hugo:0.127.0 --minify
 This will create a `./public/` folder that contains the output as published on GH Pages.
 
 > [!IMPORTANT]
-> Make sure to run `git submodule update --init` to pull remote modules, otherwise the theme is not be available. This will cause the generation to fail
+> Make sure to run `git submodule update --init` to pull remote modules, otherwise the theme will not be available. This will cause the generation to fail
 
 
 ### Devcontainer