Address minor shell script linter warnings

And make a couple final README tweaks before template goes public

.github/workflows/rename_project.sh

@@ -1,11 +1,13 @@
 #!/usr/bin/env bash
-while getopts a:n:u:d: flag
+# vim:sw=2:ts=2:sts=2:et
+while getopts a:n:u: flag
 do
-    case "${flag}" in
-        a) owner=${OPTARG};;
-        n) name=${OPTARG};;
-        u) url=${OPTARG};;
-    esac
+  case "${flag}" in
+    a) owner=${OPTARG};;
+    n) name=${OPTARG};;
+    u) url=${OPTARG};;
+    *) echo "Invalid flag: ${flag}"; exit 1;;
+  esac
 done
 
 echo "Owner: $owner";
@@ -19,10 +21,10 @@ original_name="{{REPOSITORY_NAME}}"
 original_url="{{REPOSITORY_URL}}"
 for filename in $(git ls-files)
 do
-    sed -i "s/$original_owner/$owner/g" $filename
-    sed -i "s/$original_name/$name/g" $filename
-    sed -i "s/$original_url/$url/g" $filename
-    echo "Renamed $filename"
+  sed -i "s/$original_owner/$owner/g" "$filename"
+  sed -i "s/$original_name/$name/g" "$filename"
+  sed -i "s/$original_url/$url/g" "$filename"
+  echo "Renamed $filename"
 done
 
 # This command runs only once on GHA!

README.md

@@ -1,8 +1,7 @@
 [![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active)
-[![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-2.1-4baaaa.svg)](https://github.com/nginxinc/template-repository/main/CODE_OF_CONDUCT.md)
-[![Community Support](https://badgen.net/badge/support/community/cyan?icon=awesome)](https://github.com/nginxinc/template-repository/blob/main/SUPPORT.md)
-
 [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/nginxinc/template-repository/badge)](https://securityscorecards.dev/viewer/?uri=github.com/nginxinc/template-repository)
+[![Community Support](https://badgen.net/badge/support/community/cyan?icon=awesome)](https://github.com/nginxinc/template-repository/blob/main/SUPPORT.md)
+[![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-2.1-4baaaa.svg)](https://github.com/nginxinc/template-repository/main/CODE_OF_CONDUCT.md)
 
 # NGINX Template Repository
 
@@ -21,7 +20,7 @@ This template includes all the scaffolding you need to get started on an OSS rep
 - [README](https://github.com/nginxinc/template-repository/blob/main/README.md) placeholder. How you structure the README is up to you (although the template provides placeholder sections), but you will need to include:
   - A [repostatus](https://www.repostatus.org/) badge
   - A contributor covenant/code of conduct badge. (Optional -- If you already have multiple badges and want to reduce clutter, simply including the actual code of conduct is enough.)
-  - A community and/or commercial support badge. Include the latter -- and replace the URL placeholder with the relevant support URL -- if this repository contains a commercially supported project. You can find a commented out example below the community badge in this README.
+  - A community and/or commercial support badge. Include the latter -- and replace the commented out badge/URL placeholder with the relevant support URL -- if this repository contains a commercially supported project. You can find a commented out example below the community badge in this README.
   - An OSSF Scorecard badge (Optional -- Some projects will by their own nature have low scores. In such a case you might want to remove this badge!)
   - An explicit link back to the [Apache License 2.0](https://github.com/nginxinc/template-repository/blob/main/LICENSE)
   - An up to date copyright notice
@@ -47,10 +46,9 @@ This template includes all the scaffolding you need to get started on an OSS rep
 <!--  DELETE THE LINES ABOVE THIS AND WRITE YOUR PROJECT README BELOW -- PLACEHOLDER SECTIONS HAVE BEEN INCLUDED FOR YOUR CONVENIENCE -->
 
 [![Project Status: Concept – Minimal or no implementation has been done yet, or the repository is only intended to be a limited example, demo, or proof-of-concept.](https://www.repostatus.org/badges/latest/concept.svg)](https://www.repostatus.org/#concept)
-[![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-2.1-4baaaa.svg)](https://github.com/{{REPOSITORY_OWNER}}/{{REPOSITORY_URL}}/main/CODE_OF_CONDUCT.md)
-[![Community Support](https://badgen.net/badge/support/community/cyan?icon=awesome)](https://github.com/{{REPOSITORY_OWNER}}/{{REPOSITORY_URL}}/blob/main/SUPPORT.md)
-<!-- [![Commercial Support](https://badgen.net/badge/support/commercial/cyan?icon=awesome)](<Insert URL>) -->
 [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/{{REPOSITORY_OWNER}}/{{REPOSITORY_URL}}/badge)](https://securityscorecards.dev/viewer/?uri=github.com/{{REPOSITORY_OWNER}}/{{REPOSITORY_URL}})
+[![Community Support](https://badgen.net/badge/support/community/cyan?icon=awesome)](https://github.com/{{REPOSITORY_OWNER}}/{{REPOSITORY_URL}}/blob/main/SUPPORT.md) <!-- [![Commercial Support](https://badgen.net/badge/support/commercial/cyan?icon=awesome)](<Insert URL>) -->
+[![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-2.1-4baaaa.svg)](https://github.com/{{REPOSITORY_OWNER}}/{{REPOSITORY_URL}}/main/CODE_OF_CONDUCT.md)
 
 # {{REPOSITORY_NAME}}