fix: Ensure diff code block lines are formatted correctly

Author: Lms24

src/components/codeBlock/code-blocks.module.scss

@@ -79,22 +79,16 @@
 
   /* Diff highlighting, classes provided by rehype-prism-plus */
   /* Set inserted line (+) color */
-  /* Move the margin left and adjust width so we can keep the parent padding  */
   :global(.diff-inserted),
   :global(.inserted) {
     background-color: rgba(16, 185, 129, 0.2);
-    margin-left: -12px;
-    width: calc(100% + 12px);
   }
 
   /* Diff highlighting, classes provided by rehype-prism-plus */
   /* Set deleted line (-) color */
-  /* Move the margin left and adjust width so we can keep the parent padding  */
   :global(.diff-deleted),
   :global(.deleted) {
     background-color: rgba(239, 68, 68, 0.2);
-    margin-left: -12px;
-    width: calc(100% + 12px);
   }
 }