enforce UTF8 encoding for pandoc

make.ps1

@@ -159,8 +159,8 @@ elseif ($command -eq "check")
 }
 elseif ($command -eq "docs")
 {
-	./OpenRA.Utility.exe d2k --docs | Out-File DOCUMENTATION.md
-	./OpenRA.Utility.exe ra --lua-docs | Out-File Lua-API.md
+	./OpenRA.Utility.exe d2k --docs | Out-File -Encoding "UTF8" DOCUMENTATION.md
+	./OpenRA.Utility.exe ra --lua-docs | Out-File -Encoding "UTF8" Lua-API.md
 }
 else
 {