docs(functions): publish dops and fzf-update

Both carry complete headers and are user-facing, but had no # CATEGORY
so generated no entry. Surfaced by the new verify-manual.py warning,
which is exactly what it is there for.

The 8 that still warn are correct exclusions: fast is a self-described
placeholder, the rest are bundled plugin and prompt internals.

functions/dops.fish

@@ -1,6 +1,9 @@
 # Copyright (C) 2026 Rootiest
 # SPDX-License-Identifier: AGPL-3.0-or-later
 
+# CATEGORY
+#   12-ai-and-developer-tools
+#
 # SYNOPSIS
 #   docker [subcommand] [args...]
 #

functions/fzf-update.fish

@@ -1,6 +1,9 @@
 # Copyright (C) 2026 Rootiest
 # SPDX-License-Identifier: AGPL-3.0-or-later
 
+# CATEGORY
+#   06-dependency-management
+#
 # SYNOPSIS
 #   fzf-update
 #