Resolve shellcheck recommendations

Author: daviddob

scripts/install_plugin.sh

@@ -138,7 +138,7 @@ exit_trap() {
 	rmTempDir
 	if [ "$result" != "0" ]; then
 		echo "Failed to install $PROJECT_NAME"
-		printf "\tFor support, go to https://github.com/${PROJECT_GH}.\n"
+		printf "\tFor support, go to https://github.com/%s.\n" "$PROJECT_GH"
 	fi
 	exit $result
 }

scripts/release.sh

@@ -7,6 +7,6 @@ if [ "$1" = "" ]; then
 	exit 1
 fi
 
-git tag $1
-git push origin $1
-gh release create $1 --draft --generate-notes --title "$1" release/*.tgz
+git tag "$1"
+git push origin "$1"
+gh release create "$1" --draft --generate-notes --title "$1" release/*.tgz