[libadwaita/wip/exalm/build-docs-2] docs: Fix subproject snippet in build-howto

[Alexander Mikhaylenko <alexm src gnome org>]

commit 77987cc7e096b0ee6279f2f8024929a3d9055388
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Mon Dec 6 22:14:59 2021 +0500

    docs: Fix subproject snippet in build-howto

 doc/build-howto.md | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/doc/build-howto.md b/doc/build-howto.md
index 36b0544a..f572336f 100644
--- a/doc/build-howto.md
+++ b/doc/build-howto.md
@@ -31,7 +31,6 @@ libadwaita_dep = dependency('libadwaita-1', version: '>= 1.0.0', required: false
 if not libadwaita_dep.found()
 libadwaita = subproject(
   'libadwaita',
-  install: false,
   default_options: [
     'examples=false',
     'package_subdir=my-project-name',