message: Fix documentation typo.
diff: @@ -1075,7 +1075,7 @@ class Distribution(_BaseDistribution):
  Denote this distribution (`self`) by `p` and the `other` distribution by
  `q`. Assuming `p, q` are absolutely continuous with respect to reference
  - measure `r`, (Shanon) cross entropy is defined as:
  + measure `r`, the KL divergence is defined as:
  ```none
  KL[p, q] = E_p[log(p(X)/q(X))]
  