Documentation: Fix plugin testing for standalone and in-tree

Add alternative for plugin in-tree testing and replace standalone with
standard way of running bazel test.

Change-Id: I7d406599f4dbf494af0581d489921ddbb5a7bcad

src/main/resources/Documentation/build.md

diff --git a/src/main/resources/Documentation/build.md b/src/main/resources/Documentation/build.md
index 6a18e01..e68e4bb 100644
--- a/src/main/resources/Documentation/build.md
+++ b/src/main/resources/Documentation/build.md
@@ -27,7 +27,7 @@
 To execute the tests run:
 
 ```
-  bazel test verify-status_tests
+  bazel test //...
 ```
 
 ### Build in Gerrit tree
@@ -61,10 +61,11 @@
   ./tools/eclipse/project_bzl.py
 ```
 
-To execute the tests run:
+To execute the tests run either one of:
 
 ```
-  bazel test plugins/verify-status:verify-status_tests
+  bazel test --test_tag_filters=@PLUGIN@ //...
+  bazel test plugins/@PLUGIN@:@PLUGIN@_tests
 ```
 
 How to build the Gerrit Plugin API is described in the [Gerrit