Update README.md to fix broken script example

[Coderrob]

The README file contained a code example that appeared to have a copy-paste issue, likely from a different context. I tested out locally to verify that the imports resolved correctly. Thought I'd PR to cover where others may try to use by example too.

Issue #315

https://github.com/fullstack-build/tslog/blob/master/README.md?plain=1#L243