docs: add default margins for form element

Change-Id: Ibce828e2f22193e1725420e90d4df408646f23dd
diff --git a/tools/droiddoc/templates-sdk/assets/android-developer-core.css b/tools/droiddoc/templates-sdk/assets/android-developer-core.css
index 37acc23..5657bcc 100644
--- a/tools/droiddoc/templates-sdk/assets/android-developer-core.css
+++ b/tools/droiddoc/templates-sdk/assets/android-developer-core.css
@@ -59,7 +59,7 @@
   padding:0 4px;
 }
 
-p {
+p, form {
   padding:0;
   margin:0 0 1em;
 }