[gnome-builder] help: fix word

[Christian Hergert <chergert src gnome org>]

commit 5f016c59f4123ee08c8d0d7e69b293332e449fbf
Author: Garrett Regier <garrettregier gmail com>
Date:   Tue Mar 12 16:48:27 2019 -0700

    help: fix word

 doc/help/exploring.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/doc/help/exploring.rst b/doc/help/exploring.rst
index 3edf1c523..ab685fee2 100644
--- a/doc/help/exploring.rst
+++ b/doc/help/exploring.rst
@@ -34,7 +34,7 @@ When you start Builder, you will be asked to select a project to be opened:
 The greeter window will display projects that you have previously opened.
 Additionally, it contains projects that you might be interested in contributing to.
 
-Using the buttons at the bottom of the window, you man create a new project, select an existing project on 
disk, or clone a source code repository.
+Using the buttons at the bottom of the window, you may create a new project, select an existing project on 
disk, or clone a source code repository.
 
 Selecting a project row opens the project.
 Pressing "Enter" from the search box will open the first project matching the requested search text.