Fix weird whitespace

include/VersionedMap.h

@@ -28,8 +28,8 @@ namespace weaselab {
  * versioned results with an underlying unversioned data structure. @warning you
  * must not apply mutations to your data structure through a version that
  * overtakes a concurrent versioned reader.
-
-  * Thread safety:
+ *
+ * Thread safety:
  *   - It's safe to operate on two different VersionedMaps in two different
  * threads concurrently
  *   - It's safe to have multiple threads operating on the same VersionedMap