[gnome-software: 2/3] RELEASE.md: Use buildtype meson option

[Philip Withnall <pwithnall src gnome org>]

commit 083967cb2b85653bd5ce24a3ae6f5b12bc644e5a
Author: Phaedrus Leeds <mwleeds endlessos org>
Date:   Wed Feb 24 17:12:53 2021 -0800

    RELEASE.md: Use buildtype meson option

 RELEASE.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/RELEASE.md b/RELEASE.md
index fc7c8121f..06bbb9b67 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -55,7 +55,7 @@ Build the release tarball:
 # Only execute git clean if you don't have anything not tracked by git that you
 # want to keep
 git clean -dfx
-meson --prefix $PWD/install build/
+meson --prefix $PWD/install -Dbuildtype=release build/
 ninja -C build/ dist
 ```