Fix: missing space in information message after repo init

In the information message displayed after running repo init, there
is a missing space:

  If this is not the directory in which you want to initializerepo

Add a space.

Change-Id: I20467673ba7481cfe782ba58ff6ed2f7ce9824a5

subcmds/init.py

diff --git a/subcmds/init.py b/subcmds/init.py
index 55497d8..1131260 100644
--- a/subcmds/init.py
+++ b/subcmds/init.py
@@ -333,7 +333,7 @@
 
     current_dir = os.getcwd()
     if current_dir != self.manifest.topdir:
-      print('If this is not the directory in which you want to initialize'
+      print('If this is not the directory in which you want to initialize '
             'repo, please run:')
       print('   rm -r %s/.repo' % self.manifest.topdir)
       print('and try again.')