fix: Update gpu limit number verification rule
Created by: weili520
Signed-off-by: TheYoungManLi cjl@kubesphere.io
What type of PR is this?
/kind bug
What this PR does / why we need it:
Now, user can't input the number like '01'.
Which issue(s) this PR fixes:
Fixes ##2484 (closed)
Special notes for reviewers:
Does this PR introduced a user-facing change?
NONE