[epiphany] Follow GNOME HIG and remove Enable prefix from preferences options

[Jan-Michael Brummer <jbrummer src gnome org>]

commit 151e66c42b6e2efffab75943ea2dd0da70567681
Author: Jan-Michael Brummer <jan brummer tabos org>
Date:   Mon Jan 13 20:22:02 2020 +0100

    Follow GNOME HIG and remove Enable prefix from preferences options

 src/resources/gtk/prefs-dialog.ui | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/resources/gtk/prefs-dialog.ui b/src/resources/gtk/prefs-dialog.ui
index a0de2f837..22d11379c 100644
--- a/src/resources/gtk/prefs-dialog.ui
+++ b/src/resources/gtk/prefs-dialog.ui
@@ -303,7 +303,7 @@
                     <child>
                       <object class="HdyActionRow">
                         <property name="activatable_widget">enable_smooth_scrolling_switch</property>
-                        <property name="title" translatable="yes">Enable sm_ooth scrolling</property>
+                        <property name="title" translatable="yes">Sm_ooth scrolling</property>
                         <property name="use_underline">True</property>
                         <property name="visible">True</property>
                         <child type="action">
@@ -317,7 +317,7 @@
                     <child>
                       <object class="HdyActionRow">
                         <property name="activatable_widget">enable_mouse_gesture_switch</property>
-                        <property name="title" translatable="yes">Enable mouse _gesture</property>
+                        <property name="title" translatable="yes">Mouse _gesture</property>
                         <property name="use_underline">True</property>
                         <property name="visible">True</property>
                         <child type="action">
@@ -349,7 +349,7 @@
                     <child>
                       <object class="HdyActionRow">
                         <property name="activatable_widget">enable_spell_checking_switch</property>
-                        <property name="title" translatable="yes">_Enable spell checking</property>
+                        <property name="title" translatable="yes">_Spell checking</property>
                         <property name="use_underline">True</property>
                         <property name="visible">True</property>
                         <child type="action">