use shared gh action asf (#273)

* use shared gh action from ASF

Signed-off-by: Olivier Lamy <olamy@apache.org>

.github/workflows/maven.yml

@@ -21,25 +21,5 @@ on: [push, pull_request]
 
 jobs:
   build:
-
-    strategy:
-      matrix:
-        os: [ubuntu-latest, windows-latest, macOS-latest]
-        java: [8, 11, 17]
-      fail-fast: false
-
-    runs-on: ${{ matrix.os }}
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-
-      - name: Set up JDK
-        uses: actions/setup-java@v3.1.1
-        with:
-          java-version: ${{ matrix.java }}
-          distribution: temurin
-          cache: maven
-
-      - name: Build with Maven
-        run: ./mvnw verify -e -B -V -P run-its
+    name: Verify
+    uses: apache/maven-gh-actions-shared/.github/workflows/maven-verify.yml@v2

src/main/java/org/codehaus/mojo/flatten/FlattenMojo.java

@@ -98,7 +98,8 @@
  * of the original POM with the focus to contain only the important information for consuming it. Therefore information
  * that is only required for maintenance by developers and to build the project artifact(s) are stripped. Starting from
  * here we specify how the flattened POM is created from the original POM and its project:<br>
- * <table border="1" summary="">
+ * <table>
+ * <caption></caption>
  * <tr>
  * <th>Element</th>
  * <th>Transformation</th>