[gnome-builder] Fix a typo (installiing)

[Piotr Drąg <piotrdrag src gnome org>]

commit d3f49179fe23fc268635ddbce25610850f38197a
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Wed Feb 17 23:06:27 2016 +0100

    Fix a typo (installiing)

 .../build-tools/gbp-build-configuration-view.ui    |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plugins/build-tools/gbp-build-configuration-view.ui 
b/plugins/build-tools/gbp-build-configuration-view.ui
index cb978f6..c7f520a 100644
--- a/plugins/build-tools/gbp-build-configuration-view.ui
+++ b/plugins/build-tools/gbp-build-configuration-view.ui
@@ -55,7 +55,7 @@
                 </child>
                 <child>
                   <object class="GtkListBoxRow">
-                    <property name="tooltip-text" translatable="yes">The prefix to use when installiing the 
project</property>
+                    <property name="tooltip-text" translatable="yes">The prefix to use when installing the 
project</property>
                     <property name="visible">true</property>
                     <child>
                       <object class="GtkBox">