Malformed string in Japanese language causes all builds to fail

[James103]

Version of OpenTTD

Since b721787

Expected result

The Japanese language compiles correctly and all builds pass.

Actual result

The following string in the Japanese translation is malformed, causing the Japanese language to fail compiling and all builds to fail.

OpenTTD/src/lang/japanese.txt

Line 2405 in b721787

STR_ROAD_TOOLBAR_TOOLTIP_CONVERT_ROAD :{BLACK}道路の種類を変更/アップグレードします.Shiftは、コスト見積もりの​​作成/表示を切り替えます

Steps to reproduce

Check the build status for commit b721787 and notice that all builds are failing.

Originally posted by @James103 in #9108 (comment)