[librsvg: 13/23] Include "Title:" headings in the chapters so they get shown in the main page

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

commit 0e6ba7467d7850626289134844b080bf674d239d
Author: Federico Mena Quintero <federico gnome org>
Date:   Thu Jan 6 17:53:30 2022 -0600

    Include "Title:" headings in the chapters so they get shown in the main page
    
    Part-of: <https://gitlab.gnome.org/GNOME/librsvg/-/merge_requests/650>

 doc/migrating.md       | 2 ++
 doc/overview.md        | 4 +++-
 doc/recommendations.md | 2 ++
 3 files changed, 7 insertions(+), 1 deletion(-)
---
diff --git a/doc/migrating.md b/doc/migrating.md
index 0aa02b81d..9c828c5e6 100644
--- a/doc/migrating.md
+++ b/doc/migrating.md
@@ -1,3 +1,5 @@
+Title: Migrating from old APIs
+
 # Migrating from old APIs
 
 ## Migrating from the deprecated API that does not use viewports {#migrating-from-non-viewport}
diff --git a/doc/overview.md b/doc/overview.md
index 393ea1abb..302226c6c 100644
--- a/doc/overview.md
+++ b/doc/overview.md
@@ -1,4 +1,6 @@
-# Overview of Librsvg's API
+Title: Overview of Librsvg
+
+# Overview of Librsvg
 
 Librsvg is a library for rendering Scalable Vector Graphics files (SVG).
 Specifically, it can take non-animated, non-scripted SVG documents and
diff --git a/doc/recommendations.md b/doc/recommendations.md
index 89d68ae67..ede9e6944 100644
--- a/doc/recommendations.md
+++ b/doc/recommendations.md
@@ -1,3 +1,5 @@
+Title: Recommendations for Applications
+
 # Recommendations for Applications
 
 ## How sizing works in SVG {#sizing}