Adding ToC to docs

Author: sanathkr

docs/globals.rst

@@ -1,6 +1,8 @@
 Globals Section
 ===============
 
+.. contents::
+
 Lambda functions within a SAM template tend to have shared configuration such as Runtime, Memory, 
 VPC Settings, Environment Variables etc. Instead of duplicating this information in every function, you can 
 write them once in the  ``Globals`` section and let all Functions inhert it. 

docs/safe_lambda_deployments.rst

@@ -1,6 +1,8 @@
 Safe Lambda deployments
 =======================
 
+.. contents::
+
 Pushing to production can be nerve-racking even if you have 100% unit test coverage and state-of-art full CD system. 
 It is a good practice to expose your new code to a small percentage of production traffic, run tests, watch for alarms 
 and dial up traffic as you gain more confidence. The goal is to minimize production impact as much as possible.