Remove {} chars from API reference links.
Remove {} chars from API reference links.

While browsers shows them correctly JIRA, StackOverflow and others
in-form URL parsers aren't likes them and breaks the referencing.

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