[roll] Roll third_party/pigweed docs: Update shortlinks

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/247454
Original-Revision: d19799902cd04939b38ca9c8f08e068710b19d95
GitOrigin-RevId: 2b62db07500711b6d0b1456f03fff733b23224ae
Change-Id: I74fa685a5d16c917bf1349f7785bff807fa40c30

Author: Kayce Basques

third_party/flower

@@ -504,7 +504,7 @@
              path="third_party/pigweed/src"
              remote="https://fuchsia.googlesource.com/third_party/pigweed.googlesource.com/pigweed/pigweed"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="fd6d1e67bf39b950e45974e7997302ba9b07dca9"/>
+             revision="d19799902cd04939b38ca9c8f08e068710b19d95"/>
     <project name="third_party/github.com/google/python_portpicker"
              gitsubmoduleof="fuchsia"
              path="third_party/python_portpicker/src"