update a couple missed docstrings

Author: aholmberg

_modules/cassandra/cluster.html

@@ -278,6 +278,8 @@ <h1>Source code for cassandra.cluster</h1><div class="highlight"><pre>
 <span class="sd">        &gt;&gt;&gt; ...</span>
 <span class="sd">        &gt;&gt;&gt; cluster.shutdown()</span>
 
+<span class="sd">    ``Cluster`` and ``Session`` also provide context management functions</span>
+<span class="sd">    which implicitly handle shutdown when leaving scope.</span>
 <span class="sd">    &quot;&quot;&quot;</span>
 
     <span class="n">contact_points</span> <span class="o">=</span> <span class="p">[</span><span class="s">&#39;127.0.0.1&#39;</span><span class="p">]</span>

_modules/cassandra/concurrent.html

@@ -124,8 +124,8 @@ <h1>Source code for cassandra.concurrent</h1><div class="highlight"><pre>
 <span class="sd">        footprint is marginal CPU overhead (more thread coordination and sorting out-of-order results</span>
 <span class="sd">        on-the-fly).</span>
 
-<span class="sd">    A sequence of ``(success, result_or_exc)`` tuples is returned in the same</span>
-<span class="sd">    order that the statements were passed in.  If ``success`` is :const:`False`,</span>
+<span class="sd">    A sequence of ``ExecutionResult(success, result_or_exc)`` namedtuples is returned</span>
+<span class="sd">    in the same order that the statements were passed in.  If ``success`` is :const:`False`,</span>
 <span class="sd">    there was an error executing the statement, and ``result_or_exc`` will be</span>
 <span class="sd">    an :class:`Exception`.  If ``success`` is :const:`True`, ``result_or_exc``</span>
 <span class="sd">    will be the query result.</span>

api/cassandra/cluster.html

@@ -101,6 +101,8 @@ <h3>Quick search</h3>
 <span class="gp">&gt;&gt;&gt; </span><span class="n">cluster</span><span class="o">.</span><span class="n">shutdown</span><span class="p">()</span>
 </pre></div>
 </div>
+<p><code class="docutils literal"><span class="pre">Cluster</span></code> and <code class="docutils literal"><span class="pre">Session</span></code> also provide context management functions
+which implicitly handle shutdown when leaving scope.</p>
 <p>Any of the mutable Cluster attributes may be set as keyword arguments
 to the constructor.</p>
 <p>Any of the mutable Cluster attributes may be set as keyword arguments to the constructor.</p>

api/cassandra/concurrent.html

@@ -111,8 +111,8 @@ <h3>Quick search</h3>
 footprint is marginal CPU overhead (more thread coordination and sorting out-of-order results
 on-the-fly).</p>
 </div></blockquote>
-<p>A sequence of <code class="docutils literal"><span class="pre">(success,</span> <span class="pre">result_or_exc)</span></code> tuples is returned in the same
-order that the statements were passed in.  If <code class="docutils literal"><span class="pre">success</span></code> is <code class="xref py py-const docutils literal"><span class="pre">False</span></code>,
+<p>A sequence of <code class="docutils literal"><span class="pre">ExecutionResult(success,</span> <span class="pre">result_or_exc)</span></code> namedtuples is returned
+in the same order that the statements were passed in.  If <code class="docutils literal"><span class="pre">success</span></code> is <code class="xref py py-const docutils literal"><span class="pre">False</span></code>,
 there was an error executing the statement, and <code class="docutils literal"><span class="pre">result_or_exc</span></code> will be
 an <code class="xref py py-class docutils literal"><span class="pre">Exception</span></code>.  If <code class="docutils literal"><span class="pre">success</span></code> is <code class="xref py py-const docutils literal"><span class="pre">True</span></code>, <code class="docutils literal"><span class="pre">result_or_exc</span></code>
 will be the query result.</p>