HBASE-24239 [HBCK2] Remove removeExtraRegionsFromMeta from README (#59)

Signed-off-by: Wellington Chevreuil <wchevreuil@apache.org>
diff --git a/hbase-hbck2/README.md b/hbase-hbck2/README.md
index 6e6d9ea..39f3711 100644
--- a/hbase-hbck2/README.md
+++ b/hbase-hbck2/README.md
@@ -558,7 +558,7 @@
 operation mistakes (like deleting/moving the region dir manually), or even meta info data loss
 issues such as HBASE-21843.
 
-Such problem can be addressed with the Master online, using the _removeExtraRegionsFromMeta_
+Such problem can be addressed with the Master online, using the _extraRegionsInMeta --fix_
 command in _HBCK2_. This command is less disruptive to hbase than a full hbase:meta rebuild
 covered later. Also useful when this happens on versions that don't support _fixMeta_ hbck2 option
 (any prior to "2.0.6", "2.1.6", "2.2.1", "2.3.0","3.0.0").