Rename OsmoGbPROXY -> *Proxy

Change-Id: I7542ac1d5242f1784146de2df7cecaf70fe93c6c
Related: SYS#5115, SYS#5005
diff --git a/doc/manuals/chapters/gbproxy-running.adoc b/doc/manuals/chapters/gbproxy-running.adoc
index 9182b48..1f6b6a1 100644
--- a/doc/manuals/chapters/gbproxy-running.adoc
+++ b/doc/manuals/chapters/gbproxy-running.adoc
@@ -1,6 +1,6 @@
-== Running OsmoGbPROXY
+== Running OsmoGbProxy
 
-The OsmoGbPROXY executable (`osmo-gbproxy`) offers the following command-line
+The OsmoGbProxy executable (`osmo-gbproxy`) offers the following command-line
 options: