Edit Callback.md

Amanda Butler · web-flow · commit 2edff81643df · 2019-12-18T11:41:20.000-06:00
Tweak phrasing for active voice.
diff --git a/docs/api/platform/Callback.md b/docs/api/platform/Callback.md
@@ -24,7 +24,7 @@ void run_timer_event(Callback<void(float)> on_timer) {
 }
 ```
 
-Callbacks can be reset to empty by assigning `nullptr`.
+You can reset Callbacks to empty by assigning `nullptr`.
 
 The Callback class is what’s known in C++ as a “Concrete Type”. That is, the Callback class is lightweight enough to be passed around like an int, pointer or other primitive type.
 

Original file line number	Diff line number	Diff line change
`@@ -24,7 +24,7 @@ void run_timer_event(Callback<void(float)> on_timer) {`
`24`	`24`	`}`
`25`	`25`	```
`26`	`26`
`27`		-Callbacks can be reset to empty by assigning `nullptr`.
	`27`	+You can reset Callbacks to empty by assigning `nullptr`.
`28`	`28`
`29`	`29`	`The Callback class is what’s known in C++ as a “Concrete Type”. That is, the Callback class is lightweight enough to be passed around like an int, pointer or other primitive type.`
`30`	`30`