move api_version breadcrumb out of description condition

Author: noahdietz

gapic-generator-java/src/main/java/com/google/api/generator/gapic/composer/comment/ServiceClientCommentComposer.java

@@ -108,21 +108,19 @@ public static List<CommentStatement> createClassHeaderComments(
       String secondaryTransport) {
     JavaDocComment.Builder classHeaderJavadocBuilder = JavaDocComment.builder();
     if (service.hasDescription()) {
-      String description = service.description();
-
-      // Include google.api.api_version breadcrumb comment.
-      if (service.hasApiVersion()) {
-        description =
-            String.format(
-                "%s\n\nThis client uses %s version %s.",
-                description, service.apiShortName(), service.apiVersion());
-      }
-
       String descriptionComment =
-          CommentFormatter.formatAsJavaDocComment(description, SERVICE_DESCRIPTION_SUMMARY_PATTERN);
+          CommentFormatter.formatAsJavaDocComment(
+              service.description(), SERVICE_DESCRIPTION_SUMMARY_PATTERN);
       classHeaderJavadocBuilder = classHeaderJavadocBuilder.addUnescapedComment(descriptionComment);
     }
 
+    // Include google.api.api_version breadcrumb comment.
+    if (service.hasApiVersion()) {
+      classHeaderJavadocBuilder.addUnescapedComment(
+          String.format(
+              "This client uses %s version %s.", service.apiShortName(), service.apiVersion()));
+    }
+
     // Service introduction.
     classHeaderJavadocBuilder.addParagraph(SERVICE_DESCRIPTION_INTRO_STRING);
     classHeaderJavadocBuilder.addSampleCode(classMethodSampleCode);