[WITHDRAW] Documentation: Fix typo "eXtention" -> "Extension" and duplicated words

[Wang Zihan]

From: Wang Zihan <3772548978 at qq.com>

I apologize for submitting incorrect patches. After review by Björn Persson,
I realized that my changes were not actually fixing errors:

1. Patch "Documentation: loongarch: Fix typo eXtention -> Extension"
   The capitalization of 'X' in 'eXtention' was intentional to highlight
   the letter, not a spelling mistake.

2. Patch "Documentation: Fix duplicated words" (the "later on on" part)
   "Later on" is an established English expression. The original text
   was not an error, just a stylistic choice.

I am withdrawing these patches:
- Message-ID: <20260502111912.143743-1-3772548978 at qq.com>
- Message-ID: <20260502111916.145238-1-3772548978 at qq.com>

Thank you for the correction and education. I will be more careful in the future.

Apologies for the noise.

Wang Zihan