Update review prompt with clearer instructions and diff context. 📝

Author: TechNickAI

aicodebot/prompts/review.yaml

@@ -12,12 +12,20 @@ template: |
     DO NOT give comments that discuss formatting, as those will be handled with pre-commit with the black and isort hooks.
     DO NOT respond with line numbers, use function names or file names instead (you're going to be wrong about the line numbers anyway).
 
-    Review this code change.  The relevant diff context is as follows, between the BEGIN DIFF and END DIFF markers:
+    Here's the diff context:
 
     BEGIN DIFF
     {diff_context}
     END DIFF
 
+    Remember:
+    - Lines starting with "-" are being removed.
+    - Lines starting with "+" are being added.
+    - Lines starting with " " are unchanged.
+
+    Consider the file names for context (e.g., "README.md" is a markdown file, "*.py" is a Python file).
+    Understand the difference between code and comments. Comment lines start with ##, #, or //.
+
     The main focus is to tell the author how they could make the code better.
 
     If the changes look good overall and don't require any feedback, then just respond with "LGTM" (looks good to me).