Pull Request resolves #46927.

• I read the Generative AI policy and my contribution is either not created with the help of AI or is compatible with the policy and GNU/GPL 2 or later.

Summary of Changes

Fixes two issues in installation/language/en-US/joomla.ini:

1. JPREVIOUS="Site" → JPREVIOUS="Previous" (line 249) — This was a copy-paste error from the JSITE key on line 251. All other en-GB/en-US language files (language/en-GB/joomla.ini, administrator/language/en-GB/joomla.ini, api/language/en-GB/joomla.ini) correctly define JPREVIOUS="Previous".

2. "occured" → "occurred" (line 311) — Simple misspelling in the JLIB_JS_AJAX_ERROR_TIMEOUT user-facing error message.

Testing Instructions

1. Open installation/language/en-US/joomla.ini
2. Verify line 249: JPREVIOUS="Previous"
3. Verify line 311: JLIB_JS_AJAX_ERROR_TIMEOUT="A timeout has occurred while fetching the JSON data."

Actual result BEFORE applying this Pull Request

• JPREVIOUS displays "Site" instead of "Previous" during installation
• Timeout error message shows "occured" (misspelled)

Expected result AFTER applying this Pull Request

• JPREVIOUS correctly displays "Previous"
• Timeout error message shows "occurred" (correct spelling)

Link to documentations

Please select:

• Documentation link for guide.joomla.org:

• No documentation changes for guide.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed