Fix some links in the readme file

README.md

@@ -1,5 +1,5 @@
 # SonicClient
-This is a rudimentary (Sonic)[https://github.com/valeriansaliou/sonic]
+This is a rudimentary [Sonic](https://github.com/valeriansaliou/sonic)
 command-line client that I'm using to interact with a locally running
 service.
 
@@ -17,7 +17,7 @@ $ docker-compose up -d; docker-compose logs -f
 ```
 
 ## Client
-To build the client you need a (Nim)[https://nim-lang.org/] compiler
+To build the client you need a [Nim](https://nim-lang.org/) compiler
 for your target architecture; once it's available, along with the
 `nimble` tool, you can build the client with:
 ```sh