chore(config): update ai-commit.php

- Add exclusion for *-lock.json files in diff_options
- Update commit message guidelines in the body

Author: [email protected]

config/ai-commit.php

@@ -18,6 +18,7 @@
 
     // Append options for the `git diff` command.
     'diff_options' => [
+        ':!*-lock.json',
         ':!*.lock',
         ':!*.sum',
     ],
@@ -164,7 +165,7 @@
             - The details about what was done in the body of the message.
             - Any useful details concerning the change in the body of the message.
             - Use a hyphen (-) for the bullet points in the body of the message.
-            Write 3 commit messages that accurately summarizes the changes made in the given `git diff` output, following the best practices listed above and the conventional commit format.
+            Write 1 commit messages that accurately summarizes the changes made in the given `git diff` output, following the best practices listed above and the conventional commit format.
             Please provide a response in the form of a valid JSON object and do not include "Output:", "Response:" or anything similar to those two before it, in the following format:
             [
                 {