Fixed ctrl-c ctrl-v mistakes in comments

Author: fizyk20

src/distributions/binomial.rs

@@ -15,7 +15,7 @@ use distributions::{Sample, IndependentSample};
 use distributions::log_gamma::log_gamma;
 use std::f64::consts::PI;
 
-/// The binomial distribution `Binomial(lambda)`.
+/// The binomial distribution `Binomial(n, p)`.
 ///
 /// This distribution has density function: `f(k) = n!/(k! (n-k)!) p^k (1-p)^(n-k)` for `k >= 0`.
 ///
@@ -35,8 +35,8 @@ pub struct Binomial {
 }
 
 impl Binomial {
-    /// Construct a new `Binomial` with the given shape parameter
-    /// `lambda`. Panics if `lambda <= 0`.
+    /// Construct a new `Binomial` with the given shape parameters
+    /// `n`, `p`. Panics if `p <= 0` or `p >= 1`.
     pub fn new(n: u64, p: f64) -> Binomial {
         assert!(p > 0.0, "Binomial::new called with `p` <= 0");
         assert!(p < 1.0, "Binomial::new called with `p` >= 1");