[BUG] Spurious changes in ./bin/utils/export_docs_generators.sh output on Windows

Created by: hauntingEcho

Bug Report Checklist

[ X ] Have you provided a full/minimal spec to reproduce the issue?
[ N/A ] Have you validated the input using an OpenAPI validator (example)?
[ X ] Have you tested with the latest master to confirm the issue still exists?
[ X ] Have you searched for related issues/PRs?
[ X ] What's the actual output vs expected output?
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Description

running the steps required as part of the PR template generates a bunch of junk on Windows, from / vs \ filepath differences

openapi-generator version

master branch

Generation Details

running the steps required as part of the PR template

Steps to reproduce

Open git-bash on Windows
git checkout master && git reset --hard && git clean -fdx to make sure you don't have any junk in your local repo
./mvnw clean package
./bin/utils/export_docs_generators.sh to generate the samples
git diff to see the unwanted changes.

Expected output: nothing in the diff Actual output: very long, containing a lot of spurious changes. See attached tmp.txt