README.md: rename section to "Entering the HNix REPL"

Anton-Latukha · Anton-Latukha · commit 86b609e22b2e · 2020-09-30T17:06:57.000+03:00
diff --git a/README.md b/README.md
@@ -95,7 +95,8 @@ cabal v2-run hnix -- --help
 ```
 (`--` is for separation between `cabal` & `hnix` args)
 
-## Using the REPL
+
+## Entering the HNix REPL
 
 Enter REPL:
 ```
