Update README

Author: thombashi

README.md

@@ -6,16 +6,15 @@
 
 ## Usage
 
-### Configurations
-Add this to your `.pre-commit-config.yaml`:
+Add the following to your `.pre-commit-config.yaml`:
 
 ```yaml
 repos:
     - repo: https://github.com/cybozu/pre-commit-jsonnet
       rev: v0.2.0
       hooks:
           - id: jsonnet-fmt
-            args: ["--test"]  # you can use arbitrary options of jsonnetfmt command
+            args: ["--test"]  # you can specify any options of jsonnetfmt command
           - id: jsonnet-lint
-            args: ["--jpath", "lib/"]  # you can use arbitrary options of jsonnet-lint command
+            args: []  # you can specify any options of jsonnet-lint command
 ```