Typo corrected

Signed-off-by: Lenard Nagy (elnrnag) <lenard.nagy@ericsson.com>

README.linux

@@ -124,7 +124,7 @@ make run
 
 These tests might run for half an hour (regr.tests)  to two hours (func.tests)
 
-8. Optionally , copy Titan into its final directory.
+8. Optionally, copy Titan into its final directory.
 From here on, you can continue with the Titan installation guide, see /Install/docs, 
 to set/change environment variables etc.