fix typos in docs and dev test script

doc/en/scripting/builtins/libblock.md

@@ -151,7 +151,7 @@ block.raycast(start: vec3, dir: vec3, max_distance: number, [optional] dest: tab
 Casts a ray from the start point in the direction of *dir*. Max_distance specifies the maximum ray length.
 
 Argument `filter` can be used to tell ray what blocks can be skipped(passed through) during ray-casting.
-To use filter `dest` argument must be filled with some value(can be nil), it's done for backwards compatability 
+To use filter `dest` argument must be filled with some value(can be nil), it's done for backwards compatibility 
 
 The `include_non_selectable` argument determines whether blocks that cannot be selected by the cursor will be included.
 Example - `base:water`

doc/en/scripting/builtins/libinventory.md

@@ -186,7 +186,7 @@ inventory.clone(invid: int) -> int
 
 -- Move an item from slotA of invA to slotB of invB. 
 -- invA may be the same as invB.
--- If slotB will be chosen automaticly if argument is not specified.
+-- If slotB will be chosen automatically if argument is not specified.
 -- The move may be incomplete if the available slot has no enough stack space.
 inventory.move(invA: int, slotA: int, invB: int, slotB: int)
 

doc/en/scripting/builtins/libplayer.md

@@ -154,7 +154,7 @@ Returns position of the selected block or nil
 player.get_selected_entity(playerid: int) -> int
 ```
 
-Returns unique indentifier of the entity selected by player
+Returns unique identifier of the entity selected by player
 
 ```lua
 player.get_entity(playerid: int) -> int

doc/en/scripting/ecs.md

@@ -8,7 +8,7 @@ The entity object is available in components as a global variable **entity**.
 -- Deletes an entity (the entity may continue to exist until the frame ends, but will not be displayed in that frame)
 entity:despawn()
 
--- Returns entity defintion index (integer ID)
+-- Returns entity definition index (integer ID)
 entity:def_index() -> int
 
 -- Returns entity definition name (string ID)