made semi-colon on basic-javascript challenge optional. (#36465)

* made closing operator optional.

* truncated unnecessary regex

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/assignment-with-a-returned-value.english.md

@@ -26,7 +26,7 @@ tests:
   - text: <code>processed</code> should have a value of <code>2</code>
     testString: assert(processed === 2);
   - text: You should assign <code>processArg</code> to <code>processed</code>
-    testString: assert(/processed\s*=\s*processArg\(\s*7\s*\)\s*;/.test(code));
+    testString: assert(/processed\s*=\s*processArg\(\s*7\s*\)/.test(code));
 
 ```