doc-fix: Modified a misplaced comma

Sen-442b · web-flow · commit dd3c7a4a33f2 · 2022-01-29T18:57:23.000+05:30
diff --git a/1-js/11-async/01-callbacks/article.md b/1-js/11-async/01-callbacks/article.md
@@ -307,4 +307,4 @@ Also, the functions named `step*` are all of single use, they are created only t
 
 We'd like to have something better.
 
-Luckily, there are other ways to avoid such pyramids. One of the best ways is to use "promises," described in the next chapter.
+Luckily, there are other ways to avoid such pyramids. One of the best ways is to use "promises", described in the next chapter.

Original file line number	Diff line number	Diff line change
@@ -307,4 +307,4 @@ Also, the functions named `step*` are all of single use, they are created only t
`307`	`307`
`308`	`308`	`We'd like to have something better.`
`309`	`309`
`310`		`-Luckily, there are other ways to avoid such pyramids. One of the best ways is to use "promises," described in the next chapter.`
	`310`	`+Luckily, there are other ways to avoid such pyramids. One of the best ways is to use "promises", described in the next chapter.`