Calendar: Fix typos in import/export

[hmt]

• Resolves: #

Summary

Fixes a couple of typos for occ commands

You are allowed to drop this PR and commit this under any other name. I don't care about the commit. Feel free to use the diff to patch it yourself if this speeds up the process.

TODO

• ...

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)
• Labels added where applicable (ex: bug/enhancement, 3. to review, feature component)
• Milestone added for target branch/version (ex: 32.x for stable32)

[welcome]

Thanks for your first pull request and welcome to the community! Feel free to keep them coming! If you are looking for issues to tackle then have a look at this selection: https://github.com/nextcloud/server/issues?q=is%3Aopen+is%3Aissue+label%3A%22good+first+issue%22

[come-nc]

/backport to stable33

[come-nc]

/backport to stable32

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