resources: orgainize directory.

Should make it easier to ask just for images.

Change-Id: If821743dc924c4bfbc6b2b2d29b14affde7b3afd
Reviewed-on: https://skia-review.googlesource.com/82684
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
diff --git a/docs/SkCanvas_Reference.bmh b/docs/SkCanvas_Reference.bmh
index efbf41f..b2c70f5 100644
--- a/docs/SkCanvas_Reference.bmh
+++ b/docs/SkCanvas_Reference.bmh
@@ -2034,7 +2034,7 @@
 Outside of the circle the mandrill is brightened.
 ##
     #Image 3
-    // sk_sp<SkImage> image = GetResourceAsImage("mandrill_256.png");
+    // sk_sp<SkImage> image = GetResourceAsImage("images/mandrill_256.png");
     canvas->drawImage(image, 0, 0, nullptr);
     SkCanvas::SaveLayerRec rec;
     SkPaint paint;