Update python3.rst

docs/python3.rst

@@ -33,7 +33,7 @@ guarantee that this won't happen on Python 3.
 Few Users
 ---------
 
-Although moving to Python 3 should be done someday, most people still uses
+Although moving to Python 3 should be done someday, most people still use
 Python 2 for now.  As a result many of the problems you will encounter are
 probably hard to search for on the internet if they are Python 3 specific.
 
@@ -45,8 +45,8 @@ support Python 3 yet.
 
 Even if you start your project with knowing that all you will need is
 supported by Python 3 you don't know what happens six months from now.
-But if you are familiar Python 3 and Flask extension, you can start porting
-libraries on your own.
+But if you are familiar with Python 3 and Flask extension, you can start
+porting libraries on your own.
 
 Recommendations
 ---------------