HBASE-27804 Correct sample usage of -skip with assigns in HBCK2 docs

[NihalJain]

No description provided.

[NihalJain]

Simple doc fix. Could you please help review: @petersomogyi, @ndimiduk ?

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 20s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
+0 🆗	markdownlint	0m 0s	markdownlint was not available.
+1 💚	@author	0m 0s	The patch does not contain any @author tags.
		_ master Compile Tests _
		_ Patch Compile Tests _
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
		_ Other Tests _
+1 💚	asflicense	0m 9s	The patch does not generate ASF License warnings.
		1m 43s

Subsystem	Report/Notes
Docker	ClientAPI=1.42 ServerAPI=1.42 base: https://ci-hbase.apache.org/job/HBase-Operator-Tools-PreCommit/job/PR-115/1/artifact/yetus-precommit-check/output/Dockerfile
GITHUB PR	#115
Optional Tests	dupname asflicense markdownlint
uname	Linux 31746cec0e8a 5.4.0-1097-aws #105~18.04.1-Ubuntu SMP Mon Feb 13 17:50:57 UTC 2023 x86_64 GNU/Linux
Build tool	maven
git revision	master / 30e3997
Max. process+thread count	33 (vs. ulimit of 5000)
modules	C: hbase-hbck2 U: hbase-hbck2
Console output	https://ci-hbase.apache.org/job/HBase-Operator-Tools-PreCommit/job/PR-115/1/console
versions	git=2.30.2 maven=3.8.6
Powered by	Apache Yetus 0.12.0 https://yetus.apache.org

This message was automatically generated.

[ndimiduk]

Thank you @NihalJain (and @petersomogyi) !