fix(rdn1edge): update RD-N1-Edge's changelog title

The title for RD-N1-Edge was written as "RD-N1 Edge" in the changelog
file. This has been corrected to "RD-N1-Edge" to pedantically reflect
the proper name for the platform.

Change-Id: I17a0f8745117674482e7c668109d821c81e35d1d
Signed-off-by: Rohit Mathew <rohit.mathew@arm.com>
diff --git a/changelog.yaml b/changelog.yaml
index 527a6b7..bfcfcdb 100644
--- a/changelog.yaml
+++ b/changelog.yaml
@@ -222,7 +222,7 @@
               - title: SGI-575
                 scope: sgi575
 
-              - title: RD-N1 Edge
+              - title: RD-N1-Edge
                 scope: rdn1edge
 
               - title: RD-V1