fi-0126: Attribute argument must be named {:#fi-0126}

When using an official attribute that takes multiple arguments, you cannot pass an unnamed argument:

{% include “docs/reference/fidl/language/error-catalog/label/_bad.md” %}

{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/bad/fi-0126.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}

Instead, specify the name of the argument:

{% include “docs/reference/fidl/language/error-catalog/label/_good.md” %}

{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/good/fi-0126.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}

This error occurs because there is no way of knowing what argument you intended to set if the attribute accepts more than one argument.