update terms used in docstrings across the package

docs/source/glossary.rst

docs/source/index.rst

docs/vale/.vale.ini

gso/main.py

gso/products/__init__.py

gso/products/product_blocks/iptrunk.py

gso/products/product_blocks/router.py

gso/products/product_blocks/site.py

gso/services/infoblox.py

gso/services/provisioning_proxy.py

gso/services/subscriptions.py

gso/settings.py

gso/workflows/__init__.py

gso/workflows/utils.py