Fix typos in mtools

Co-authored-by: Starbeamrainbowlabs <sbrl@starbeamrainbowlabs.com>

Chat-Command-Reference.md

@@ -789,6 +789,7 @@ Alias for [`//count`](#count).
 
 ## `//mface`
 Returns the horizontal (X/Z) axis or axes the player is looking along.
+Aliases: `//mfacing`.
 
 ```
 //mface
@@ -809,7 +810,7 @@ Returns the lengths of the current selection on the X, Y and Z axes.
 ```
 
 ## `//mtrig`
-Returns the length of the diagonal pos1,pos2 and it's angle on the XZ and h/Y axes.
+Returns the length of the diagonal from pos1 to pos2 and its angle on the XZ (horizontal) and Y (vertical) axes.
 
 ```
 //mtrig

worldeditadditions_commands/commands/measure/mtrig.lua

@@ -14,7 +14,7 @@ worldedit.register_command("mtrig", {
 		return true
 	end,
 	func = function(name, params_text)
-		local str = "The measurements of the line pos1,pos2 are Length (D): "
+		local str = "The measurements of the line from pos1 to pos2 are Length (D): "
 		local vec = v3.subtract(worldedit.pos2[name],worldedit.pos1[name]):abs()
 		local len = vec:length()
 		str = str..wea.round(len, 4)..", ∠XZ: "..