doc: use strictEqual instead of equal

Mandeep Singh · Mandeep Singh · commit 3958388d3418 · 2017-07-16T19:13:11.000+05:30
diff --git a/doc/api/errors.md b/doc/api/errors.md
@@ -366,8 +366,8 @@ commonly indicate inequality of actual and expected parameters.
 For example:
 
 ```js
-assert.equal(1, 2);
-// AssertionError [ERR_ASSERTION]: 1 == 2
+assert.strictEqual(1, 2);
+// AssertionError [ERR_ASSERTION]: 1 === 2
 ```
 
 ## Class: RangeError
