Minor updates to comments.

Author: sangwinc

stack/cas/castext2/blocks/quid.block.php

@@ -28,7 +28,7 @@
 /**
  * A block for outputting question usage level unique identifiers.
  * Primarily used for scripting and to ensure that identifiers stay
- * unique and do not collide when simialr logic gets copied to multiple
+ * unique and do not collide when similar logic gets copied to multiple
  * questions and those questions appear on the same page.
  */
 class stack_cas_castext2_quid extends stack_cas_castext2_block {

stack/cas/castext2/blocks/script.block.php

@@ -45,7 +45,7 @@ public function compile($format, $options): ?MP_Node {
         ]);
 
         if (!isset($options['in iframe'])) {
-            return new MP_String(' ERROR [[script]] blocks muSt be within iframes. ');
+            return new MP_String(' ERROR [[script]] blocks must be within iframes. ');
         }
 
         // All formatting assumed to be raw HTML here.