Fixes old print statement in some documentation pages

docs/patterns/sqlite3.rst

@@ -113,16 +113,16 @@ raw cursor and connection objects.
 Here is how you can use it::
 
     for user in query_db('select * from users'):
-        print user['username'], 'has the id', user['user_id']
+        print(user['username'], 'has the id', user['user_id'])
 
 Or if you just want a single result::
 
     user = query_db('select * from users where username = ?',
                     [the_username], one=True)
     if user is None:
-        print 'No such user'
+        print('No such user')
     else:
-        print the_username, 'has the id', user['user_id']
+        print(the_username, 'has the id', user['user_id'])
 
 To pass variable parts to the SQL statement, use a question mark in the
 statement and pass in the arguments as a list.  Never directly add them to

docs/signals.rst

@@ -177,7 +177,7 @@ With Blinker 1.1 you can also easily subscribe to signals by using the new
 
     @template_rendered.connect_via(app)
     def when_template_rendered(sender, template, context, **extra):
-        print f'Template {template.name} is rendered with {context}'
+        print(f'Template {template.name} is rendered with {context}')
 
 Core Signals
 ------------