[gnome-builder/gnome-builder-3-36] Fix typo in Extension documentation

[Christian Hergert <chergert src gnome org>]

commit 2b27b83379a747b2193a84f741f7305261a7d5a3
Author: seeseemelk <sebastiaan de schaetzen gmail com>
Date:   Mon Mar 23 15:32:00 2020 +0000

    Fix typo in Extension documentation

 doc/help/plugins/building/pipeline.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/doc/help/plugins/building/pipeline.rst b/doc/help/plugins/building/pipeline.rst
index 3a5bea28b..ebc71ec32 100644
--- a/doc/help/plugins/building/pipeline.rst
+++ b/doc/help/plugins/building/pipeline.rst
@@ -22,7 +22,7 @@ Build Phases
   - ``Ide.PipelinePhase.CONFIGURE`` should run configuration scripts such as ``./configure``, ``meson``, or 
``cmake``.
   - ``Ide.PipelinePhase.BUILD`` should perform the incremental build process such as ``make`` or ``ninja``.
   - ``Ide.PipelinePhase.INSTALL`` should install the project to the configured prefix.
-  - ``Ide.PipelinePhase.EXPORT`` should be used to attach export hooks such as buliding a Flatpak bundle, 
Debian, or RPM package.
+  - ``Ide.PipelinePhase.EXPORT`` should be used to attach export hooks such as building a Flatpak bundle, 
Debian, or RPM package.
 
 Additionally, there are phases which have special meaning.