[readme] fix typos

Co-authored-by: Jordan Harband <[email protected]>
Co-authored-by: René Filip <[email protected]>

Author: ljharb

README.md

@@ -18,9 +18,10 @@ This package implements the [es-shim API](https://github.com/es-shims/api) inter
 Most common usage:
 ```js
 var flags = require('regexp.prototype.flags');
+var assert = require('assert');
 
 assert(flags(/a/) === '');
-assert(flags(new RegExp('a') === '');
+assert(flags(new RegExp('a')) === '');
 assert(flags(/a/mig) === 'gim');
 assert(flags(new RegExp('a', 'mig')) === 'gim');
 
@@ -29,7 +30,7 @@ if (!RegExp.prototype.flags) {
 }
 
 assert(flags(/a/) === /a/.flags);
-assert(flags(new RegExp('a') === new RegExp('a').flags);
+assert(flags(new RegExp('a')) === new RegExp('a').flags);
 assert(flags(/a/mig) === /a/mig.flags);
 assert(flags(new RegExp('a', 'mig')) === new RegExp('a', 'mig').flags);
 ```

package.json

@@ -18,7 +18,7 @@
 		"tests-only": "nyc tape 'test/**/*.js'",
 		"prelint": "eclint check $(git ls-files | xargs find 2> /dev/null | grep -vE 'node_modules|\\.git')",
 		"lint": "eslint --ext=js,mjs .",
-		"postlint": "es-shim-api --bound",
+		"postlint": "evalmd README.md && es-shim-api --bound",
 		"version": "auto-changelog && git add CHANGELOG.md",
 		"postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\""
 	},
@@ -54,6 +54,7 @@
 		"eclint": "^2.8.1",
 		"es-value-fixtures": "^1.4.2",
 		"eslint": "=8.8.0",
+		"evalmd": "^0.0.19",
 		"for-each": "^0.3.3",
 		"functions-have-names": "^1.2.3",
 		"has-strict-mode": "^1.0.1",