add aliases for DM 1.0 benchmark reports

[qiancai]

What is changed, added, or deleted? (Required)

The 1.0 benchmark reports will not be kept in the dev branch after the following PRs are merged. So this PR adds the corresponding aliases to avoid the 404 error when users open https://docs.pingcap.com/zh/tidb-data-migration/dev/benchmark-v1.0-ga/.

pingcap/docs-cn#8042
pingcap/docs#7317

Which DM version(s) do your changes apply to? (Required)

• master (the latest development version)
• v5.3 (TiDB DM 5.3 versions)
• v2.0 (TiDB DM 2.0 versions)
• v1.0 (TiDB DM 1.0 versions)

What is the related PR or file link(s)?

• This PR is translated from:
• Other reference link(s):

Do your changes match any of the following descriptions?

• Delete files
• Change aliases
• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• lilin90

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[lilin90]

LGTM