fixed off-by-one error in skiaserve /cmd

tools/debugger/SkDebugCanvas.h

Index: tools/debugger/SkDebugCanvas.h
diff --git a/tools/debugger/SkDebugCanvas.h b/tools/debugger/SkDebugCanvas.h
index 339e7add4aa20df5117b15af68cb1b06ee6f8ec7..9a4a9d603bd61c9ad4d0938b65049ea0fa8c1f65 100644
--- a/tools/debugger/SkDebugCanvas.h
+++ b/tools/debugger/SkDebugCanvas.h
@@ -141,7 +141,7 @@ public:
     SkString clipStackData() const { return fClipStackData; }
 
     /**
-        Returns a JSON object representing up to N draws, where N is < SkDebugCanvas::getSize().
+        Returns a JSON object representing up to N draws, where N is <= SkDebugCanvas::getSize().
         The encoder may use the UrlDataManager to store binary data such as images, referring to
         them via URLs embedded in the JSON.
      */