Apply suggestions from code review

Co-authored-by: Xavier RENE-CORAIL <xcorail@github.com>

Author: Alvaro Muñoz

.github/ISSUE_TEMPLATE/all-for-one.yml

@@ -42,7 +42,7 @@ body:
     attributes:
       label: CWE
       description: CWE that best fits the vulnerability class modeled with your query
-      placeholder: ex. CWE-502: Deserialization of Untrusted Data
+      placeholder: "ex. CWE-502: Deserialization of Untrusted Data"
     validations:
       required: false
   - type: textarea