Merge pull request #104 from ClaytonNorthey92/hotfix/formatting

fix: Add Go formatting to README code block

README.md

@@ -70,7 +70,7 @@ Testcontainers-go gives you the ability to build and image and run a container f
 You can do so by specifiying a `Context` (the filepath to the build context on your local filesystem) 
 and optionally a `Dockerfile` (defaults to "Dockerfile") like so:
 
-```
+```go
 req := ContainerRequest{
 		FromDockerfile: testcontainers.FromDockerfile{
 			Context: "/path/to/build/context",