[v16.x] doc: include git add -f to include folder
Ref:
$ git add deps/openssl/openssl/include/openssl/opensslconf.h
The following paths are ignored by one of your .gitignore files:
deps/openssl/openssl/include/openssl/opensslconf.h
hint: Use -f if you really want to add them.
hint: Turn this message off by running
hint: "git config advice.addIgnoredFile false"
The .gitignore
from quictls/openssl is read by git so we need to force include it