docs: Update UI text

Created by: serenashe

Signed-off-by: serenashe serenashe@kubesphere.io

What type of PR is this?

/kind documentation

What this PR does / why we need it:

UI text optimization.

Which issue(s) this PR fixes:

Fixes ##[4076]https://github.com/kubesphere/kubesphere/issues/4076

Special notes for reviewers:

/assign @harrisonliu5

The following files involve changes in the source code logic, please take a look, thanks 🙏 
src/components/Forms/LoggingCollection/Status/index.jsx
src/components/Forms/Notification/WebhookForm/index.jsx
src/pages/clusters/containers/LogCollections/Detail/index.jsx
src/pages/projects/containers/Alerting/Policies/Detail/index.jsx

Does this PR introduced a user-facing change?

None