Update grant-overview.mdx

updating Retro Funding number

pages/grant/grant-overview.mdx

@@ -26,7 +26,7 @@ Missions are specific initiatives aimed at making measurable progress towards th
 | **Mission Type** | **Season 7 Budget** | **Where can I Apply?** | **Who is Eligible?**   | **When can I Apply?** | **Who Selects Projects?**  | **When is Impact Evaluated?**  |
 | --- | --- | --- | --- | --- | --- | --- |
 | [Foundation Missions](https://gov.optimism.io/t/season-7-intent/9292#p-41723-foundation-missions-5) | 6M OP | [Foundation Mission Github](https://github.com/orgs/ethereum-optimism/projects/31/views/1) | Each Foundation Mission has its own eligibility,  viewable on the specific issue.  | Each Foundation Mission has its own deadline, viewable on the specific issue. More Mission will be added throughout the Season, so check back regularly!  | Developer Advisory Board | At the end of the Season |
-| [Retro Funding Missions](https://gov.optimism.io/t/season-7-retro-funding-missions/)  | 18M OP | [Retro Funding Rounds Page](https://retrofunding.optimism.io/rounds) | Each Retro Funding round has its own eligibility, viewable on the Retro Funding Rounds page.  | Each Retro Funding round has its own deadline, findable on the Retro Funding page.  | All eligible projects can participate, see Retro Funding Rounds page for details.  | Regularly throughout Season  |
+| [Retro Funding Missions](https://gov.optimism.io/t/season-7-retro-funding-missions/)  | 16M OP | [Retro Funding Rounds Page](https://retrofunding.optimism.io/rounds) | Each Retro Funding round has its own eligibility, viewable on the Retro Funding Rounds page.  | Each Retro Funding round has its own deadline, findable on the Retro Funding page.  | All eligible projects can participate, see Retro Funding Rounds page for details.  | Regularly throughout Season  |
 | [Governance Fund Missions](https://gov.optimism.io/t/season-7-governance-fund-missions/)  | 10.5M OP | [Grants Council Charmverse Homepage](https://app.charmverse.io/op-grants/) | Each Governance Fund Mission will outline its own eligibility, determined by the Grants Council. The eligibility criteria for OP Chains will be shared in January; you can expect roughly 10 chains to be eligible. Additional details on the Decision Market will be posted soon.  | Application deadlines will be set by the Grants Council at the start of Season 7. You’ll be able to find them on the public Optimism Governance calendar [here](https://calendar.google.com/calendar/u/0/r?cid=Y19mbm10Z3VoNm5vbzZxZ2JuaTJncGVyaWQ0a0Bncm91cC5jYWxlbmRhci5nb29nbGUuY29t).  | Grants Council | At the end of the Season |
 
 ## Measuring Impact of Missions