Replace "Midget" with "Widget" in example words

Word "Midget" can be offensive and shouldn't be included as an example in educational materials. Replaced with "Widget" for better consistency/inclusiveness. https://www.lpaonline.org/the-m-word

Author: jedpimentel

1-js/05-data-types/03-string/article.md

@@ -364,8 +364,8 @@ alert( "Hello".includes("Bye") ); // false
 The optional second argument of `str.includes` is the position to start searching from:
 
 ```js run
-alert( "Midget".includes("id") ); // true
-alert( "Midget".includes("id", 3) ); // false, from position 3 there is no "id"
+alert( "Widget".includes("id") ); // true
+alert( "Widget".includes("id", 3) ); // false, from position 3 there is no "id"
 ```
 
 The methods [str.startsWith](mdn:js/String/startsWith) and [str.endsWith](mdn:js/String/endsWith) do exactly what they say: