fix typo in processor-api developer guide docs
Fixed a small typo on the Processor API page of the Kafka Streams developer guide docs. ("buildeer" changed to "builder")
Reviewers: Bill Bejeck
<a class="reference internal" href="#streams-developer-guide-state-store-custom"><span class="std std-ref">implement your own custom store type</span></a>.
It&#8217;s common practice to leverage an existing store type via the <code class="docutils literal"><span class="pre">Stores</span></code> factory.</p>
<p>Note that, when using Kafka Streams, you normally don&#8217;t create or instantiate state stores directly in your code.
- Rather, you define state stores indirectly by creating a so-called <code class="docutils literal"><span class="pre">StoreBuilder</span></code>. This buildeer is used by
+ Rather, you define state stores indirectly by creating a so-called <code class="docutils literal"><span class="pre">StoreBuilder</span></code>. This builder is used by
Kafka Streams as a factory to instantiate the actual state stores locally in application instances when and where
needed.</p>
<p>The following store types are available out of the box.</p>
