README.md: De-emphasize Go a bit.

We love Go, but Sketch works on other systems too!
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 # Sketch
 
-Sketch is an agentic coding tool focused on the Go programming language.
-Sketch runs in your terminal, has a web UI, understands your code, and helps you get work done.
-To keep your environment pristine, sketch starts a docker container and outputs
-its work onto a branch in your host git repository.
+Sketch is an agentic coding tool.
+
+Sketch runs in your terminal, has a web UI, understands your code, and helps
+you get work done. To keep your environment pristine, sketch starts a docker
+container and outputs its work onto a branch in your host git repository.
+
+Sketch helps with most programming environments, but Go is Sketch's specialty.
 
 To get started: