Section 14.12 OpenSearch Support:
Change the example dspace.mysite.edu/open-search/?query-<your query> to dspace.mysite.edu/open-search/?query=<your query>
Change "|Parameter|Values|" to "Parameter=Values". Is more than one value allowed? If so, what's the delimiter?
Fix encoding for scope definition in Parameter table. Simplify text to something like "handle of a collection or community to restrict the search to."
Change last line in section, "Configuration is throught" to "Configuration is through".