Doc change: increment androidappdocs version.

Change-Id: Ifd517ed5c51cb95fdc4cc83d5521242086d59534
diff --git a/scripts/app_engine_server/app.yaml b/scripts/app_engine_server/app.yaml
index 1fb50c7..8e3a149 100755
--- a/scripts/app_engine_server/app.yaml
+++ b/scripts/app_engine_server/app.yaml
@@ -1,5 +1,5 @@
 application: androidappdocs-staging
-version: 1
+version: 2
 runtime: python
 api_version: 1