[gnome-subtitles] Minor doc change

[Pedro Castro <pcastro src gnome org>]

commit 555b3dcfc9797451ca0753de2b1b15689dda07e8
Author: Pedro Castro <pedro gnomesubtitles org>
Date:   Mon Jun 20 20:56:24 2022 +0100

    Minor doc change

 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/README.md b/README.md
index 75d7bdb..3beea2e 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ Runtime dependencies:
 - gstreamer1.0-plugins-good    >= 1.18
 - gstreamer1.0-libav           >= 1.18 (optional, for media codecs)
 
-Build time dependencies:
+Build dependencies:
 - git
 - xsltproc
 - gettext