doc: Fixed consistency of MCUboot

Fixed the consistency of the case used in the term MCUboot.

Signed-off-by: Francesco Servidio <francesco.servidio@nordicsemi.no>
diff --git a/docs/SubmittingPatches.md b/docs/SubmittingPatches.md
index 55b9230..5d19c51 100644
--- a/docs/SubmittingPatches.md
+++ b/docs/SubmittingPatches.md
@@ -1,6 +1,6 @@
 # Submitting Patches
 
-Development on mcuboot primarily takes place in github, at:
+Development on MCUboot primarily takes place in github, at:
 https://github.com/mcu-tools/mcuboot
 
 Changes should be submitted via github pull requests.  Each commit