docs: Update README

Author: azu

ReadMe.md

@@ -25,9 +25,10 @@ $ textlint --rule textlint-rule-ginger text-to-proofread.txt
 ## Options
 
 * `skipPatterns`: `string[]`
-  * Set skip pattern that is detecting by [@textlint/regexp-string-matcher](https://github.com/textlint/regexp-string-matcher)
+  * Set skip pattern that is detected by [@textlint/regexp-string-matcher](https://github.com/textlint/regexp-string-matcher)
 
 You can set regexp-like string as skip patterns.
+
 For more details about regexp-like string, see [@textlint/regexp-string-matcher](https://github.com/textlint/regexp-string-matcher)
 
 ```json

package.json

@@ -47,6 +47,7 @@
     "textlint-tester": "^3.0.3"
   },
   "lint-staged": {
+    "*.md": ["prettier", "git add"],
     "*.js": ["prettier", "git add"],
     "*.json": ["prettier", "git add"]
   }