fix(ng_examples_db): use absolute label for js binary

Author: clydin

src/ng_examples_db/index.bzl

@@ -5,7 +5,7 @@ def ng_examples_db(name, srcs, path, out, data = []):
         name = name,
         outs = [out],
         srcs = srcs + data,
-        tool = ":bin",
+        tool = "@rules_angular//src/ng_examples_db:bin",
         progress_message = "Generating code examples database from %s" % path,
         mnemonic = "NgExamplesDb",
         args = [path, "$(rootpath %s)" % out],