Update instructions for uploading docs

Author: edschofield

docs/other/upload_future_docs.sh

@@ -3,14 +3,14 @@
 git checkout v0.16.0  # or whatever
 rm -Rf docs/build/
 cd docs; make html
-cp cheatsheet.pdf /shared/
+cp cheatsheet.pdf ~/shared/
 cd build
-touch /shared/python-future-html-docs.zip
-rm /shared/python-future-html-docs.zip
-zip -r /shared/python-future-html-docs.zip *
+touch ~/shared/python-future-html-docs.zip
+rm ~/shared/python-future-html-docs.zip
+zip -r ~/shared/python-future-html-docs.zip *
 
-scp /shared/python-future-html-docs.zip python-future.org:
-scp /shared/cheatsheet.pdf python-future.org:
+scp ~/shared/python-future-html-docs.zip python-future.org:
+scp ~/shared/cheatsheet.pdf python-future.org:
 ssh python-future.org