[librsvg: 1/7] Put PangoGravityHint in the text roadmap's glossary

[Marge Bot <marge-bot src gnome org>]

commit 4850577a597d1cd0a7a32743410da274efb26cb1
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Oct 26 10:43:40 2021 -0500

    Put PangoGravityHint in the text roadmap's glossary
    
    Part-of: <https://gitlab.gnome.org/GNOME/librsvg/-/merge_requests/622>

 devel-docs/text-layout.md | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/devel-docs/text-layout.md b/devel-docs/text-layout.md
index ce331678b..5e999c7c2 100644
--- a/devel-docs/text-layout.md
+++ b/devel-docs/text-layout.md
@@ -219,3 +219,5 @@ PangoLayoutRun - same as PangoGlyphItem - a pair of PangoItem and the PangoGlyph
 generated during shaping. (Visual order).
 
 PangoGlyphString - The glyphs generated for a single PangoItem.
+
+PangoGravityHint - Defines how horizontal scripts should behave in a vertical context.