Fix hello-tophat.md

src/hello-tophat.md

@@ -12,10 +12,10 @@ import (
 )
 
 fn init*() {
-	window.setup("Hello tophat!", 600, 600)
+	window::setup("Hello tophat!", 600, 600)
 
-    window.onFrame.register({
-		canvas.drawText("Hello tophat!", { 1, 1 }, th.black, 2)
+	window::onFrame.register({
+		canvas::drawText("Hello tophat!", { 1, 1 }, th.black, 2)
 	})
 }
 ```
@@ -44,29 +44,29 @@ aren't on the file system.  All modules have their documentation available
 [here](api/README.md).
 
 ```umka
-fn main() {
+fn init*() {
 ```
 
 This declares the `init` function and exports it. This function your game's
 entry point.
 
 ```umka
-	window.setup("Hello tophat!", 600, 600)
+	window::setup("Hello tophat!", 600, 600)
 ```
 
 This function call creates a window. It will set the title to "Hello tophat!"
 and the dimensions to 600x600.
 
 ```umka
-    window.onFrame.register({
+    window::onFrame.register({
 ```
 
 This registers a callback to the `onFrame` signal. What this means is that the
 code in the brackets will be called on every frame. This is you game's main
 loop.
 
 ```umka
-		canvas.drawText("Hello tophat!", { 1, 1 }, th.black, 2)
+		canvas::drawText("Hello tophat!", { 1, 1 }, th.black, 2)
 ```
 
 This function draws the text `Hello tophat!` at position `1, 1`, with black