Documentation: Refactor to match other plugin documentation

Move in-tree testing section before eclipse-related section for
consistency across other plugins and also to match standalone case.

Change-Id: I21958953ce7bebd81eb39daebd9138b67b1bc470

src/main/resources/Documentation/build.md

diff --git a/src/main/resources/Documentation/build.md b/src/main/resources/Documentation/build.md
index 045e540..10bdbbc 100644
--- a/src/main/resources/Documentation/build.md
+++ b/src/main/resources/Documentation/build.md
@@ -66,6 +66,13 @@
   bazel-bin/plugins/@PLUGIN@/@PLUGIN@.jar
 ```
 
+To execute the tests run either one of:
+
+```
+  bazel test --test_tag_filters=@PLUGIN@ //...
+  bazel test plugins/@PLUGIN@:@PLUGIN@_tests
+```
+
 This project can be imported into the Eclipse IDE.
 Add the plugin name to the `CUSTOM_PLUGINS` and to the
 `CUSTOM_PLUGINS_TEST_DEPS` set in Gerrit core in
@@ -75,12 +82,5 @@
   ./tools/eclipse/project.py
 ```
 
-To execute the tests run either one of:
-
-```
-  bazel test --test_tag_filters=@PLUGIN@ //...
-  bazel test plugins/@PLUGIN@:@PLUGIN@_tests
-```
-
 More information about Buck can be found in the [Gerrit
 documentation](../../../Documentation/dev-bazel.html).