Update stardoc to 0.5.3 (#3427)

Author: fmeum

WORKSPACE

@@ -154,10 +154,10 @@ local_repository(
 # so we declare it in the WORKSPACE
 http_archive(
     name = "io_bazel_stardoc",
-    sha256 = "c9794dcc8026a30ff67cf7cf91ebe245ca294b20b071845d12c192afe243ad72",
+    sha256 = "3fd8fec4ddec3c670bd810904e2e33170bedfe12f90adf943508184be458c8bb",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/stardoc/releases/download/0.5.0/stardoc-0.5.0.tar.gz",
-        "https://github.com/bazelbuild/stardoc/releases/download/0.5.0/stardoc-0.5.0.tar.gz",
+        "https://mirror.bazel.build/github.com/bazelbuild/stardoc/releases/download/0.5.3/stardoc-0.5.3.tar.gz",
+        "https://github.com/bazelbuild/stardoc/releases/download/0.5.3/stardoc-0.5.3.tar.gz",
     ],
 )