docs: use hash in action quick usage example

Signed-off-by: Demolus13 <parth.govale@oracle.com>

Author: Demolus13

docs/source/pages/macaron_action.rst

@@ -17,7 +17,7 @@ When using this action you can reference the action in your workflow. Example:
     analyze:
       runs-on: ubuntu-latest
       steps:
-        - uses: actions/checkout@v4
+        - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         - name: Run Macaron Security Analysis
           uses: oracle/macaron@v0.21.0
           with:

src/macaron/resources/policies/datalog/malware-detection.dl.template

@@ -3,7 +3,6 @@
 Policy("check-component", component_id, "Check component artifacts.") :-
     check_passed(component_id, "mcn_detect_malicious_metadata_1").
 
-
 apply_policy_to("check-component", component_id) :-
     is_component(component_id, purl),
     match("<PACKAGE_PURL>", purl).