Fix typos

    must be present, and configured.</p>

    <p>The only configuration required is to select which cache provider

    to use.  This is the responsibility of modules using the cache, and

    they enable selecton using directives such as

    they enable selection using directives such as

    <directive module="authn_socache">AuthnCacheSOCache</directive>,

    <directive module="ssl">SSLSessionCache</directive>, and

    <directive module="ssl">SSLStaplingCache</directive>.</p>

    <dl>

    <dt>"dbm" (mod_socache_dbm)</dt>

    <dd>This makes use of a DBM hash file.

     The choice of underlying DBM configuration may be configurable

     The choice of underlying DBM used may be configurable

     if the installed APR version supports multiple DBM implementations.</dd>

    <dt>"dc" (mod_socache_dc)</dt>

    <dd>This makes use of the <a href="http://www.distcache.org/">distcache</a>