readme: fix doxygen heading with link bug (#226)

Author: itay-grudev

README.md

@@ -8,9 +8,9 @@ Keeps the Primary Instance of your Application and kills each subsequent
 instance. It can (if enabled) spawn secondary (non-related to the primary)
 instances and can send data to the primary instance from secondary instances.
 
-# [Documentation](https://itay-grudev.github.io/SingleApplication/)
+# Documentation
 
-You can find the full usage reference and examples [here](https://itay-grudev.github.io/SingleApplication/classSingleApplication.html).
+You can find the full usage reference and examples in our library [documentation](https://itay-grudev.github.io/SingleApplication/classSingleApplication.html).
 
 ## Usage