[FIX] discuss: Correct grammar in title

fhe-odoo · tivisse · commit 7f3e7d8af429 · 2017-12-01T10:28:28.000+01:00
diff --git a/discuss/overview.rst b/discuss/overview.rst
@@ -1,6 +1,6 @@
-=======================
-Why to use Odoo Discuss
-=======================
+====================
+Why use Odoo Discuss
+====================
 
 Odoo Discuss is an easy to use messaging app for teams that brings all
 your organization's communication into one place and seamlessly
