Rename OsmoGbPROXY -> *Proxy

Change-Id: I7542ac1d5242f1784146de2df7cecaf70fe93c6c
Related: SYS#5115, SYS#5005
diff --git a/doc/manuals/chapters/gbproxy-configuration.adoc b/doc/manuals/chapters/gbproxy-configuration.adoc
index e61af48..057d1ca 100644
--- a/doc/manuals/chapters/gbproxy-configuration.adoc
+++ b/doc/manuals/chapters/gbproxy-configuration.adoc
@@ -1,4 +1,4 @@
-== Configuring OsmoGbPROXY
+== Configuring OsmoGbProxy
 
 TBD.  Unfortunately this chapter of the manual still needs to be written.
 Osmocom has very limited funding and support resources; Feel free to help