Omit extranous dash with CSI timeout parameter

Author: timoreimann

README.md

@@ -45,7 +45,7 @@ Note that the external-resizer does not scale with more replicas. Only one exter
 
 * `--leader-election-namespace`: Namespace where the leader election resource lives. Defaults to the pod namespace if not set.
 
-* `---csiTimeout <duration>`: Timeout of all calls to CSI driver. It should be set to value that accommodates majority of `ControllerExpandVolume` calls. 15 seconds is used by default.
+* `--csiTimeout <duration>`: Timeout of all calls to CSI driver. It should be set to value that accommodates majority of `ControllerExpandVolume` calls. 15 seconds is used by default.
 
 * `--workers <num>`: Number of simultaneously running `ControllerExpandVolume` operations. Default value is `10`.