fix copy-paste mistakes in docs

8ed55b3aff

API.md

@@ -59,7 +59,7 @@ Creates a new fake player.
 
 #### **`fakelib.create_inventory([sizes])`**
 
-Creates a new fake player.
+Creates a new fake inventory.
 
 **Arguments**
 
@@ -67,7 +67,7 @@ Creates a new fake player.
 
 #### **`fakelib.create_metadata([data])`**
 
-Creates a new fake player.
+Creates a new fake metadata object.
 
 **Arguments**
 

player.lua

@@ -441,6 +441,10 @@ function fake_player.hud_get_hotbar_selected_image()
 	return ""
 end
 
+function fake_player.is_valid()
+	return true
+end
+
 -- No-op functions
 ----------------------------------------
 do