Update README.md

README.md

@@ -16,7 +16,7 @@ A lightweight implementation of cooperative multitasking (task scheduling). An e
 
 You mostly do not need to worry about pitfalls of concurrent processing (races, deadlocks, livelocks, resource sharing, etc.).  The fact of cooperative processing takes care of such issues by design. 
 
-_“Everybody who learns concurrency thinks they understand it, ends up finding mysterious races they thought weren’t possible, and discovers that they didn’t actually understand it yet after all.”_ **Herb Sutter, chair of the ISO C++ standards committee, Microsoft.**
+_“Everybody who learns concurrency and thinks they understand it, ends up finding mysterious races they thought weren’t possible, and discovers that they didn’t actually understand it yet after all.”_ **Herb Sutter, chair of the ISO C++ standards committee, Microsoft.**
 
 **Main features:**
 1. Periodic task execution, with dynamic execution period in `milliseconds` (default) or `microseconds` (if explicitly enabled) – frequency of execution