Update README.md

Author: doanbactam

README.md

@@ -48,8 +48,8 @@ Only official program pages are listed.
 | Program | Provider | Benefit |
 |---|---|---|
 | [Claude for Open Source](https://claude.com/contact-sales/claude-for-oss) | Anthropic | Claude Max access 6 month |
-| [OpenAI Codex for Open Source](https://openai.com/form/codex-for-oss/) | OpenAI | ChatGPT Pro access 6 month  |
-| [OpenAI Codex Open Source Fund](https://openai.com/form/codex-open-source-fund/) | OpenAI | API credits (up to $25k) |
+| [OpenAI Codex for Open Source](https://openai.com/form/codex-for-oss) | OpenAI | ChatGPT Pro access 6 month  |
+| [OpenAI Codex Open Source Fund](https://openai.com/form/codex-open-source-fund) | OpenAI | API credits (up to $25k) |
 | [Upstash for Open Source](https://upstash.com/open-source) | Upstash | $1,000 Monthly credit grant |
 
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