adding github examples to help string

src/app/course/[courseName]/modules/[moduleName]/assignment/[assignmentName]/EditAssignment.tsx

@@ -131,7 +131,7 @@ export default function EditAssignment({
       Body={
         <>
           {showHelp && (
-            <div className=" max-w-96">
+            <div className=" max-w-96 flex-1 h-full overflow-y-auto">
               <pre>
                 <code>{getAssignmentHelpString(settings)}</code>
               </pre>

src/app/course/[courseName]/modules/[moduleName]/assignment/[assignmentName]/getAssignmentHelpString.tsx

@@ -33,6 +33,7 @@ You can use markdown to format your assignment description. For example, you can
 
 [Link to Canvas](https://canvas.instructure.com)
 
+
 \`Inline code\`
 
 > Blockquote
@@ -54,6 +55,10 @@ flowchart TD
     C -->|Three| F[fa:fa-car Car]
 \`\`\`
 
+## github classroom links will be replaced by the GithubClassroomAssignmentShareLink setting
+
+[Github Classroom](insert_github_classroom_url)
+
 ## Rubric
 
 - 1pt: singular point