MINOR: Remove erroneous extra <code> in design doc
Reviewers: Bill Bejeck
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Let's discuss a concrete example of such a stream. Say we have a topic containing user email addresses; every time a user updates their email address we send a message to this topic using their user id as the
primary key. Now say we send the following messages over some time period for a user with id 123, each message corresponding to a change in email address (messages for other ids are omitted):
- <pre class="line-numbers"><code class="language-text"><code> 123 => bill@microsoft.com
+ <pre class="line-numbers"><code class="language-text"> 123 => bill@microsoft.com
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