Fix: Missing spaces in printed messages

Several messages are printed with the `print` method and the message
is split across two lines, i.e.:

 print('This is a message split'
       'across two source code lines')

Which causes the message to be printed as:

 This is a message splitacross two source code lines

Add a space at the end of the first line before the line break:

 print('This is a message split '
       'across two source code lines'

Also correct a minor spelling mistake.

Change-Id: Ib98d93fcfb98d78f48025fcc428b6661380cff79
diff --git a/subcmds/help.py b/subcmds/help.py
index 15aab7f..7842882 100644
--- a/subcmds/help.py
+++ b/subcmds/help.py
@@ -49,7 +49,7 @@
       except AttributeError:
         summary = ''
       print(fmt % (name, summary))
-    print("See 'repo help <command>' for more information on a"
+    print("See 'repo help <command>' for more information on a "
           'specific command.')
 
   def _PrintCommonCommands(self):