[gnome-builder] doc: fix typo

[Christian Hergert <chergert src gnome org>]

commit 756753d4a0f59f056aa672fc8975d254f980daa2
Author: Christian Hergert <chergert redhat com>
Date:   Thu Sep 7 16:40:04 2017 -0700

    doc: fix typo

 doc/plugins/building/pipeline.rst |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/doc/plugins/building/pipeline.rst b/doc/plugins/building/pipeline.rst
index ef8d06c..af70bac 100644
--- a/doc/plugins/building/pipeline.rst
+++ b/doc/plugins/building/pipeline.rst
@@ -112,4 +112,4 @@ loads we will register our stage in the appropriate phase.
            self.track(stage_id)
 
 .. note:: connect() was an unfortunate API choice and will likely be changed in
-          a future release to avoid collections with signals.
+          a future release to avoid collisions with signals.