update dox for drawPaint

Bug: skia:7745
Change-Id: I3b43aa28349d8525f85f6caaf416659f90c9b285
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/328816
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>

Author: reed-at-google

include/core/SkCanvas.h

@@ -1141,9 +1141,9 @@ class SK_API SkCanvas {
     */
     void discard() { this->onDiscard(); }
 
-    /** Fills clip with SkPaint paint. SkPaint components SkMaskFilter, SkShader,
+    /** Fills clip with SkPaint paint. SkPaint components, SkShader,
         SkColorFilter, SkImageFilter, and SkBlendMode affect drawing;
-        SkPathEffect in paint is ignored.
+        SkMaskFilter and SkPathEffect in paint are ignored.
 
         @param paint  graphics state used to fill SkCanvas