Fix a typo in localised-routing.md

[azezsan]

I'm not native but but I think this is the right way to write it?

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CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[azezsan]

I have read the CLA Document and I hereby sign the CLA

[samuelstroschein]

@azezsan i think you're right :D thanks!