fix review issue template github (#4578)

Author: PhilDaiguille

.github/ISSUE_TEMPLATE/bug-issue.md

@@ -1,7 +1,7 @@
 ---
 name: "Bug Report"
 about: "Report an issue with the PHP documentation"
-title: "[Bug] Issue with ..."
+title: "Issue with ..."
 labels: "bug"
 assignees: ""
 ---

.github/ISSUE_TEMPLATE/documentation-issue.md

@@ -1,7 +1,7 @@
 ---
 name: "Documentation Improvement"
 about: "Suggest an improvement for the PHP documentation"
-title: "[Docs] Improve ..."
+title: "Improve ..."
 labels: "enhancement"
 assignees: ""
 ---