[epiphany] Use consistent capitalization for Spell Checking heading

[Michael Catanzaro <mcatanzaro src gnome org>]

commit f2888fbee8c2907137cba190c19094d4d0a8b1c4
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Wed Feb 8 20:14:26 2017 -0500

    Use consistent capitalization for Spell Checking heading
    
    https://bugzilla.gnome.org/show_bug.cgi?id=778370

 src/resources/gtk/prefs-dialog.ui |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/resources/gtk/prefs-dialog.ui b/src/resources/gtk/prefs-dialog.ui
index 67405ba..42fabc6 100644
--- a/src/resources/gtk/prefs-dialog.ui
+++ b/src/resources/gtk/prefs-dialog.ui
@@ -788,7 +788,7 @@
                       <object class="GtkLabel">
                         <property name="visible">True</property>
                         <property name="halign">start</property>
-                        <property name="label" translatable="yes">Spell checking</property>
+                        <property name="label" translatable="yes">Spell Checking</property>
                         <property name="use-underline">True</property>
                         <attributes>
                           <attribute name="weight" value="bold"/>