Revise summary in README.md

Updated summary section for clarity.

Author: glebedel

README.md

@@ -11,7 +11,7 @@
 <!-- Start Summary [summary] -->
 ## Summary
 
-Accounting: The documentation for the StackOne Unified API - ACCOUNTING
+The documentation for the StackOne Unified API.
 <!-- End Summary [summary] -->
 
 <!-- Start Table of Contents [toc] -->