Fix 'occured' -> 'occurred' typos in 2 files

[SAY-5]

Trivial spelling fix — occured → occurred.

One occurrence is in a user-visible RuntimeException message emitted when an upgrade fails:

• phoenix-core-client/.../UpgradeUtil.java — "Error: problem occurred during upgrade. Table is not upgraded successfully"

The other is a test code comment:

• phoenix-pherf/.../ConfigurationParserTest.java

No functional changes.

[virajjasani]

Thanks for the PR @SAY-5, could you also create Jira under https://issues.apache.org/jira/projects/PHOENIX/issues ?
Once done, we can help merge the PR

[SAY-5]

Hi @virajjasani — thanks for the quick review. I don't currently have an Apache JIRA account; would it be possible for you (or another committer) to file the tracking ticket against the PHOENIX project? The fix is trivial (occured → occurred, two files, one user-visible RuntimeException message + one test comment, no functional change). I'll happily update the PR title with the assigned Jira ID once it exists.

[virajjasani]

@SAY-5 would you like to create the jira account? I can approve it once you creare the request. This will help you file future jiras and get more contributions as well, wdyt?

[virajjasani]

If you are interested to make future contributions, please feel free to create the account and let me know, I will approve it immediately. You can use the same jira account for filing jiras for any Apache projects.

https://selfserve.apache.org/jira-account-creation.html

While creating the request, you can select phoenix for now.

[SAY-5]

Closing — typo-only PR. Multiple maintainers across the OSS ecosystem have flagged my recent typo-sweep PRs as AI-generated spam. Apologies for the noise.