docs: add xai prompt repo link and rename Grok resources

RESOURCES.md

@@ -28,4 +28,5 @@
 - https://github.com/x1xhlol/v0-system-prompts-models-and-tools (full v0 system prompts, models and tools)
 - https://manus.im/share/lLR5uWIR5Im3k9FCktVu0k?replay=1 (Manus's Jailbreak)
 - https://gist.github.com/LouisShark/06ad5e12acf24e6aa3583e6bda46409c (Claude's code prompt)
-- https://gist.githubusercontent.com/1rgs/e4e13ac9aba301bcec28d761992ec4e8/raw/7c7cd5b91c6d355e72c7a34b6662006018588780/claudecode.js (Claude's code js)
+- https://gist.githubusercontent.com/1rgs/e4e13ac9aba301bcec28d761992ec4e8/raw/7c7cd5b91c6d355e72c7a34b6662006018588780/claudecode.js (Claude's code js)
+- https://github.com/xai-org/grok-prompts (xai-org/grok-prompts)

prompts/official-product/TOC.md

@@ -55,10 +55,10 @@
 
 ### Grok
 
-- [Grok2](./Grok/Grok2.md)
-- [Grok3](./Grok/Grok3.md)
-- [Grok3WithDeepSearch](./Grok/Grok3WithDeepSearch.md)
-- [GrokJailbreakPrompt](./Grok/GrokJailbreakPrompt.md)
+- [Grok2](xai/Grok2.md)
+- [Grok3](xai/Grok3.md)
+- [Grok3WithDeepSearch](xai/Grok3WithDeepSearch.md)
+- [GrokJailbreakPrompt](xai/GrokJailbreakPrompt.md)
 
 ### lovable