Update README.md

README.md

@@ -27,4 +27,4 @@ Requests used query the blockchain once the application is running in on Flask:
 - Mines a new block: http://127.0.0.1:5000/mine_block
 
 **Is Chain Valid**: 
-- Checks if Blockchain is valid i.e. if all previous hashes correspond across all blocks: http://127.0.0.1:5000/is_chain_valid 
+- Checks if Blockchain is valid i.e. if all previous hashes match with all blocks: http://127.0.0.1:5000/is_chain_valid