TiKV Operator - typos

[saripurigopi]

Change Request

Describe the problem

Please check the issues described below.

• Relevant URL(s): https://tikv.org/docs/4.0/tasks/try/tikv-operator/
  • In Step 2, item 3b, should only contain namespace creation command.
  • In Step 3: item 2, has a typo for kubect instead of kubectl.

Suggest an improvement/fix

A link to pd-ctl would be good option for user to install, if it was not already installed.