Update the "API Path" placeholder

[CarstenGrohmann]

Hi,

please update the placeholder text of the API Path configuration field to something like Enter the API Path e.g. /api in

twinny/src/webview/assets/locales/en.json

Line 7 in 193d14c

"api-path-placeholder": "Enter a hostname e.g 'localhost'",

Thank you,
Carsten