Fix some Americanisms

_en/items/node_drawtypes.md

@@ -173,7 +173,7 @@ minetest.register_node("default:water_source", {
     -- ^ how far
 
     post_effect_color = {a=64, r=100, g=100, b=200},
-    -- ^ color of screen when the player is submerged
+    -- ^ colour of screen when the player is submerged
 })
 ```
 

_en/map/storage.md

@@ -99,7 +99,7 @@ This is useful in order to show the owner of the node or the status.
 
 `description` is used in ItemStack Metadata to override the description when
 hovering over the stack in an inventory.
-You can use colors by encoding them with `minetest.colorize()`.
+You can use colours by encoding them with `minetest.colorize()`.
 
 `owner` is a common key used to store the username of the player that owns the
 item or node.

_en/players/formspecs.md

@@ -87,7 +87,7 @@ At the time of writing, formspec information begins on line 1765.
 
 ## Displaying Formspecs
 
-Here is a generalized way to show a formspec:
+Here is a generalised way to show a formspec:
 
     minetest.show_formspec(playername, formname, formspec)
 

_en/quality/security.md

@@ -41,12 +41,6 @@ Here's some real code found in a mod:
 ```lua
 minetest.register_on_player_receive_fields(function(player,
         formname, fields)
-    -- Todo: fix security issue here
-    local name = player:get_player_name()
-    if formname ~= "mymod:fs" then
-        return
-    end
-
     for key, field in pairs(fields) do
         local x,y,z = string.match(key,
                 "goto_([%d-]+)_([%d-]+)_([%d-]+)")
@@ -59,7 +53,7 @@ minetest.register_on_player_receive_fields(function(player,
 end
 ```
 
-Can you spot the issue? A malicious user could submit a formspec containing
+Can you spot the problem? A malicious user could submit a formspec containing
 their own position values, allowing them to teleport to anywhere they wish to.
 This could even be automated using client modifications to essentially replicate
 the `/teleport` command with no need for a privilege.