There seems to be a bug at the bottom of stack exchange sites. A random "}". First noticed it on the Drupal site but it appears on the Stack Overflow site too.
In fact, scroll down to the bottom of this page and observe.
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Yup, an extra closing brace slipped into a master view at some point...it'll be corrected next build.
Update: invalid HTML isn't something we want to be throwing out all day, build completed.