docs: improve language in Erlang query server section.
docs: improve language in Erlang query server section.

andywenk/couchdb-documentation,andywenk/couchdb-documentation,robertkowalski/couchdb-documentation,robertkowalski/couch-doc-test,micah/couchdb-documentation,micah/couchdb-documentation,kxepal/couchdb-documentation,robertkowalski/couchdb-documentation,robertkowalski/couch-doc-test,KimStebel/couchdb-documentation,cloudant/couchdb-documentation,andywenk/couchdb-documentation,kxepal/couchdb-documentation,cloudant/couchdb-documentation,micah/couchdb-documentation,robertkowalski/couch-doc-test,KimStebel/couchdb-documentation,robertkowalski/couchdb-documentation,KimStebel/couchdb-documentation,kxepal/couchdb-documentation