Merge pull request iluwatar#603 from kevelbreh/patch-1

Update README.md punctuation and spelling

Author: iluwatar

tls/README.md

@@ -18,5 +18,5 @@ Securing variables global to a thread against being spoiled by other threads. Th
 ## Applicability
 Use the Thread Local Storage in any of the following situations
 
-* when you use class variables in your Callable / Runnalbe object that are not read-only and you use the same Callable instance in more than one thread running in parallel
+* when you use class variables in your Callable / Runnable object that are not read-only and you use the same Callable instance in more than one thread running in parallel.
 * when you use static variables in your Callable / Runnable object that are not read-only and more than one instances of the Callable / Runnalbe may run in parallel threads.