[fiddle] Update named fiddles

//tools/fiddle/make_all_examples_cpp.py had not run in a while, so
some of these fiddles were not being compiled regularly and bit-rotted.

A follow-up CL will try running that script as a presubmit.

Change-Id: Ib851cb5d70485e354de3388abf56666492335d46
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/423956
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
diff --git a/docs/examples/f16.cpp b/docs/examples/f16.cpp
index df5d0b5..afd2e5a 100644
--- a/docs/examples/f16.cpp
+++ b/docs/examples/f16.cpp
@@ -418,7 +418,7 @@
         return;
     }
     canvas->scale(4, 4);
-    canvas->drawBitmap(bm, 0, 0);
+    canvas->drawImage(bm.asImage(), 0, 0);
 }
 
 }  // END FIDDLE