Update README.md (#2105)

Corrects grammatical error in the protocol overview section to improve readability.
     
Change: "If you're interest" → "If you're interested"

Co-authored-by: Miao ZhiCheng <miao@superfluid.finance>

Author: NaumovaNad

README.md

@@ -67,7 +67,7 @@ For technical document, references and tutorials, etc, refer to the
 
 EVM contracts implementation for the Superfluid Protocol.
 
-If you're interest in peeking under the hood, then check out the contracts package.
+If you're interested in peeking under the hood, then check out the contracts package.
 
 #### [`@superfluid-finance/metadata`](https://github.com/superfluid-finance/protocol-monorepo/tree/dev/packages/metadata)