Update heading in printf.md

Amanda Butler · web-flow · commit a063ce35717a · 2019-08-22T09:05:42.000-05:00
Fix heading level for rendering.
diff --git a/docs/tutorials/optimize/memory/printf.md b/docs/tutorials/optimize/memory/printf.md
@@ -1,4 +1,4 @@
-# printf and reducing memory
+## printf and reducing memory
 
 The standard library family of `printf` (`printf`, `sprintf`, `fprintf` and so on) calls takes a lot of code space. This is because there are multiple format specifiers, and it is not possible to optimize the code at build time. Even a single `printf` call in your application pulls in the entire standard library.
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-# printf and reducing memory`
	`1`	`+## printf and reducing memory`
`2`	`2`
`3`	`3`	The standard library family of `printf` (`printf`, `sprintf`, `fprintf` and so on) calls takes a lot of code space. This is because there are multiple format specifiers, and it is not possible to optimize the code at build time. Even a single `printf` call in your application pulls in the entire standard library.
`4`	`4`