docs: correct HF Space URL to mitudrudutta/ChargeBackOps

The publishable HF Space lives at huggingface.co/spaces/mitudrudutta/ChargeBackOps,
not the local 'hf' remote (ThundeR0rrr/...) which is a stale secondary.
Fixes 8 URL refs in BLOG.md (image src + repo links) and 1 in CITATION.cff
so figure src URLs resolve correctly when the blog is published.

CITATION.cff

@@ -19,7 +19,7 @@ authors:
     given-names: Mitudru
     email: mitudrudutta72@gmail.com
 repository-code: "https://github.com/MitudruDutta/ChargeBackOps"
-url: "https://huggingface.co/spaces/ThundeR0rrr/ChargeBackOps"
+url: "https://huggingface.co/spaces/mitudrudutta/ChargeBackOps"
 license: MIT
 keywords:
   - reinforcement learning