Update index.md

Solang Playground concluded

Author: semuelle

applications/index.md

@@ -177,7 +177,7 @@ Besides, **there is a clear difference between an application being accepted and
 | [k/factory](https://k-f.co/)                                 | [On-Chain Automated Treasury Management](./centrifuge-twamm.md)   | [GitHub](https://github.com/centrifuge)                               | ☐          |        ☐       |      ☐     |
 | [AISLAND DAO](https://aisland.io)                                 | [Aisland Docsig](./Aisland-DocSig.md)   | [GitHub](https://github.com/aisland-dao)                               | ☐          |        ☒       |      ☒     |
 | [Eiger](https://www.eiger.co/)                                 | [Storage solution on Polkadot](./Eiger_Storage_on_Polkadot_1.md)   | [GitHub](https://github.com/eigerco)                               | ☐          |        ☒       |      ☒     |
-| [Salaheldin Soliman](https://github.com/salaheldinsoliman)                     | [Solang Playground](Solang_Playground.md)                                                              | [GitHub](https://github.com/salaheldinsoliman)                      | ☐          |       ☒        |     ☐     |
+| [Salaheldin Soliman](https://github.com/salaheldinsoliman)                     | [Solang Playground](Solang_Playground.md)                                                              | [GitHub](https://github.com/salaheldinsoliman)                      | ☐          |       ☒        |     ☒     |
 | [P2P.ORG](http://p2p.org/)                    | [P2P data platform](data_platform_with_deep_indexed_data_and_staking_reports.md)                                                              | [GitHub](https://github.com/p2p-org)                      | ☐          |       ☒        |     ☒     |
 | [CoinFabrik](https://www.coinfabrik.com/)                    | [CoinFabrik On Ink Integration Tests](CoinFabrik_On_Ink_Integration_Tests.md)                                                              | [GitHub](https://github.com/CoinFabrik)                      | ☐          |       ☒        |     ☒     |
 | [Stake Plus Inc](https://stake.plus)                    | [Treasury Tracker](TreasuryTracker.md)                                                              | [GitHub](https://github.com/stake-plus)                      | ☐          |       ☒        |     ☒     |