Remove some backticks from docstrings that do not render properly.

PiperOrigin-RevId: 739231774

Author: lukmaz

tensorflow_probability/python/experimental/mcmc/windowed_sampling.py

@@ -642,12 +642,12 @@ def windowed_adaptive_nuts(n_draws,
       structure should broadcast with `current_state`. For example, if the
       initial state is
 
-      ```
+      `
       {
           'a': tf.zeros(n_chains),
           'b': tf.zeros([n_chains, n_features]),
       }
-      ```
+      `
 
       then any of `1.`, `{'a': 1., 'b': 1.}`, or
       `{'a': tf.ones(n_chains), 'b': tf.ones([n_chains, n_features])}` will
@@ -770,12 +770,12 @@ def windowed_adaptive_hmc(n_draws,
       structure should broadcast with `current_state`. For example, if the
       initial state is
 
-      ```
+      `
       {
           'a': tf.zeros(n_chains),
           'b': tf.zeros([n_chains, n_features]),
       }
-      ```
+      `
 
       then any of `1.`, `{'a': 1., 'b': 1.}`, or
       `{'a': tf.ones(n_chains), 'b': tf.ones([n_chains, n_features])}` will