[mrcm] Fix parameter description

Author: AAAlinaaa

snomed/com.b2international.snowowl.snomed.datastore/src/com/b2international/snowowl/snomed/core/mrcm/io/MrcmCommand.java

@@ -71,7 +71,7 @@ private static final class ImportCommand extends Command {
 		@Parameters(paramLabel = "FILE", description = "The JSON file with MRCM rules to import")
 		String file;
 
-		@Parameters(paramLabel = "BRANCH", description = "The JSON file withMRCM rules to import")
+		@Parameters(paramLabel = "BRANCH", description = "The branch to import MRCM rules to")
 		String branch;
 
 		@Override