fix(docs): lowercase 'binomial' in entropy package description

Author: Your Name

lib/node_modules/@stdlib/stats/base/dists/binomial/entropy/README.md

@@ -20,7 +20,7 @@ limitations under the License.
 
 # Entropy
 
-> [Binomial][binomial-distribution] distribution [entropy][entropy].
+> [binomial][binomial-distribution] distribution [entropy][entropy].
 
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