update html prompt language.

Author: mmiscool

src/prompts/html-snippet-merge-guidelines.md

@@ -4,6 +4,7 @@
 > These rules apply to **any and all HTML snippets** you generate.  
 > **Every HTML snippet** must fully comply with these rules at all times.  
 > These rules ensure that your generated HTML can be safely **automatically merged** into an existing document structure without manual editing.
+> Make the smallest possible code snippet that will cause the desired change. 
 
 You must follow these guidelines **exactly** for **every** snippet you generate.
 
@@ -78,7 +79,8 @@ The merge system operates under the following principles:
 ```html
 <p id="intro" DELETE_THIS_NODE></p>
 ```
-
+✅ Do not include the inner contents of the element or any other atribiutes besides the `DELETE_THIS_NODE` on thats that are to be delete. 
+✅ Do not include parent nodes. Only the node being deleted. If working on a larger snippet sinply put these deletes at the end of the snippet. 
 ✅ The node with `id="intro"` will be completely **removed** from the document.
 
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