[gtk/builder-tool-scope: 1/6] docs: Update gtk4-builder-tool docs

[Matthias Clasen <matthiasc src gnome org>]

commit b896a6a18d2dd2653f1a7d8428114673801226ca
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Oct 19 08:50:34 2022 -0400

    docs: Update gtk4-builder-tool docs
    
    Mention the new --deprecations option of the
    validate command.

 docs/reference/gtk/gtk4-builder-tool.rst | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
---
diff --git a/docs/reference/gtk/gtk4-builder-tool.rst b/docs/reference/gtk/gtk4-builder-tool.rst
index 9e011a330f..b3d08863b2 100644
--- a/docs/reference/gtk/gtk4-builder-tool.rst
+++ b/docs/reference/gtk/gtk4-builder-tool.rst
@@ -12,7 +12,7 @@ SYNOPSIS
 --------
 |   **gtk4-builder-tool** <COMMAND> [OPTIONS...] <FILE>
 |
-|   **gtk4-builder-tool** validate <FILE>
+|   **gtk4-builder-tool** validate [OPTIONS...] <FILE>
 |   **gtk4-builder-tool** enumerate <FILE>
 |   **gtk4-builder-tool** simplify [OPTIONS...] <FILE>
 |   **gtk4-builder-tool** preview [OPTIONS...] <FILE>
@@ -33,6 +33,10 @@ Validation
 The ``validate`` command validates the given UI definition file and reports
 errors to ``stderr``.
 
+``--deprecations``
+
+  Warn about uses of deprecated types in the UI definition file.
+
 Enumeration
 ^^^^^^^^^^^