Fixes for examples

examples/advanced/error_puppet.py

@@ -1,5 +1,5 @@
 """
-Error handling with parsing puppet
+Error handling with a puppet
 ==================================
 
 This example demonstrates error handling using a parsing puppet in LALR

examples/advanced/error_reporting_lalr.py

@@ -1,5 +1,5 @@
 """
-Example Driver Error Reporting
+Example-Driven Error Reporting
 ==============================
 
 A demonstration of example-driven error reporting with the LALR parser

examples/advanced/python_parser.py

@@ -1,6 +1,6 @@
 """
-Real Python Parser
-==================
+Grammar-complete Python Parser
+==============================
 
 A fully-working Python 2 & 3 parser (but not production ready yet!)
 

examples/advanced/templates.py

@@ -4,7 +4,7 @@ Templates
 
 This example shows how to use Lark's templates to achieve cleaner grammars
 
-""""
+"""
 from lark import Lark
 
 grammar = r"""