Move some job related command from WriteSpace to Job

[SuperYoko]

To fix this issue:
vesoft-inc/nebula#2611

I give this pr:
#969

And now I see that some commands are in both Job and WriteSpace row, I need somebody to confirm this.

权限	God	Admin	DBA	User	Guest	相关语句
Write space	Y					CREATE SPACE、DROP SPACE、CREATE SNAPSHOT、DROP SNAPSHOT、BALANCE DATA、BALANCE DATA STOP、BALANCE DATA REMOVE、BALANCE LEADER、ADMIN、CONFIG、INGEST、DOWNLOAD、SUBMIT JOB COMPACT、SUBMIT JOB FLUSH、SUBMIT JOB STATS、STOP JOB、RECOVER JOB、BUILD TAG INDEX、BUILD EDGE INDEX
Job	Y	Y	Y	Y		SUBMIT JOB COMPACT、SUBMIT JOB FLUSH、SUBMIT JOB STATS、STOP JOB、RECOVER JOB

[cooper-lzy]

The document has been modified.
https://docs.nebula-graph.com.cn/master/7.data-security/1.authentication/3.role-list/#_3