Fix some typos in Soong.

Test: m
Change-Id: I5b332ce12d70f13eca93b23060620c0ea4f46db7
diff --git a/apex/apex.go b/apex/apex.go
index 8b0f385..0466ccb 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -944,7 +944,7 @@
 	}
 	if a.apexTypes.image() {
 		// Build rule for unflattened APEX is created even when ctx.Config().FlattenApex()
-		// is true. This is to support referencing APEX via ":<module_name" syntax
+		// is true. This is to support referencing APEX via ":<module_name>" syntax
 		// in other modules. It is in AndroidMk where the selection of flattened
 		// or unflattened APEX is made.
 		a.buildUnflattenedApex(ctx, imageApex)