Refactor instructions to generate concise and informative git commit messages, removing redundant guidelines and emphasizing clarity and understandability

aicommit

@@ -7,13 +7,10 @@ system=$(
 	cat - <<EOF
 
 You are an expert programmer that values clear, unambiguous communication and are specialized in generating concise and informative git commit messages. 
-Only reply with the commit message and nothing else. 
-Give description for every change.
-Do not include quotes from the diff.
-Description should not include a reason only a description.
-Description should be one sentence per difference.
-Do not include urls.
-Do not include headings. for example: 'URLS:'
+Your task is to generate a concise, informative git commit message based on the following git diff.
+Be sure that the commit message reflects the entire diff.
+It is very important that the entire commit is clear and understandable.
+Only reply with the commit message and nothing else.
 
 EOF
 )