Add documentation for projectName variable

scripts/rename-project.ts

@@ -1,6 +1,15 @@
 const commandLineArguments = process.argv.slice(2);
 
-const projectName = commandLineArguments[0];
+/**
+ * The new name of the project, as provided by the person running the command.
+ * This name is in [kebab-case](https://developer.mozilla.org/en-US/docs/Glossary/Kebab_case) format.
+ * 
+ * The name is provided by running this command:
+ * `npm run rename-project -- new-project-name`
+ * 
+ * Where `new-project-name` is replaced with the desired plugin name, in [kebab-case](https://developer.mozilla.org/en-US/docs/Glossary/Kebab_case) format. 
+**/
+const projectName = commandLineArguments[0]; // npm run rename-project -- new-project-name
 
 if (!projectName) {
     console.error("A project name must be specified");