Fix typos courtesy of Steve Brecher.

README

@@ -288,9 +288,9 @@ An all time average hash rate
 The number of requested (Queued) work items from the pools
 The number of Accepted shares
 The number of Rejected shares
-The number of HardWare erorrs
+The number of HardWare errors
 The Efficiency defined as number of shares returned / work item
-The Utility defines as the number of shares / minute
+The Utility defined as the number of shares / minute
 
  GPU 1: 73.5C 2551RPM | 427.3/443.0Mh/s | A:8 R:0 HW:0 U:4.39/m