Update package.json

[woldtwerk]

the leading 's' in react-syntax-highlighter version results in yarn failing with:

YN0001: │ Error: react-syntax-highlighter@^15.3.1s isn't supported by any available resolver
    at Xc.getResolverByDescriptor (/Users/wiwo/spielwiese/test/.yarn/releases/yarn-berry.cjs:294:5330)
    at Xc.bindDescriptor (/Users/wiwo/spielwiese/test/.yarn/releases/yarn-berry.cjs:294:4719)
    at p (/Users/wiwo/spielwiese/test/.yarn/releases/yarn-berry.cjs:303:6959)
    at processTicksAndRejections (internal/process/task_queues.js:95:5)
    at async Promise.all (index 20)
    at async Promise.all (index 0)
    at async Fe.resolveEverything (/Users/wiwo/spielwiese/test/.yarn/releases/yarn-berry.cjs:303:8166)
    at async /Users/wiwo/spielwiese/test/.yarn/releases/yarn-berry.cjs:306:2135
    at async Se.startTimerPromise (/Users/wiwo/spielwiese/test/.yarn/releases/yarn-berry.cjs:275:3730)
    at async Fe.install (/Users/wiwo/spielwiese/test/.yarn/releases/yarn-berry.cjs:306:2074)

[christianwiedemann]

Thanks