更新联系方式，标记 IRC/Matrix 停用，新增微信

Co-authored-by: DeepSeek <service@deepseek.com>

Author: SilverRainZ

src/about/me.rst

@@ -43,8 +43,9 @@ You can contact me in the following ways:
 :Email:                    :email:`i@silverrainz.me`
 :Email (for job issue):    :email:`job@silverrainz.me`
 :Email (for arch issue):   :email:`la@archlinuxcn.org`
-:IRC:                      :literal_strike:`SilverRainZ@LiberaChat`, 2025: no longer active
-:Matrix:                   ``@la:mozilla.org``
+:IRC:                      :literal_strike:`SilverRainZ@LiberaChat`, inactive since 2025
+:Matrix:                   :literal_strike:`@la:mozilla.org`, inactive since 2026
+:WeChat:                   ``@SilverRainZ``
 
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