devtool: Add a line break to generated README

When devtool creates a new workspace, it produced a README with one very
long line and no space following 'bblayers.conf'.  Add a line break as was
intended.

(From OE-Core rev: 4ad1bcfc3c88ced5b7fc80c950613e31becb40f3)

Signed-off-by: Joe MacDonald <joe_macdonald@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/devtool

@@ -187,7 +187,7 @@ def _create_workspace(workspacedir, config, basepath):
             f.write('directly (although recipes added with "devtool add" will often need\n')
             f.write('direct modification.)\n')
             f.write('\nIf you no longer need to use devtool or the workspace layer\'s contents\n')
-            f.write('you can remove the path to this workspace layer from your conf/bblayers.conf')
+            f.write('you can remove the path to this workspace layer from your conf/bblayers.conf\n')
             f.write('file (and then delete the layer, if you wish).\n')
             f.write('\nNote that by default, if devtool fetches and unpacks source code, it\n')
             f.write('will place it in a subdirectory of a "sources" subdirectory of the\n')