Fix Checkstyle suppressions DTD link.

garydgregory · garydgregory · commit 2e9785b93a2a · 2021-01-11T12:13:04.000-05:00
diff --git a/checkstyle-suppressions.xml b/checkstyle-suppressions.xml
@@ -18,7 +18,7 @@ limitations under the License.
 -->
 
 <!DOCTYPE suppressions PUBLIC
-    "-//Puppy Crawl//DTD Suppressions 1.0//EN"
+    -//Checkstyle//DTD SuppressionFilter Configuration 1.0//EN
     "https://checkstyle.org/dtds/suppressions_1_0.dtd">
 
 <suppressions>
