Remove typo [CI SKIP]

example/cubic_b_spline_example.cpp

@@ -53,7 +53,6 @@ int main()
     // We will try to figure out when the population of the United States crossed 100 million.
     // Since the census is taken every 10 years, the data is equally spaced, so we can use the cubic b spline.
     // Data taken from https://en.wikipedia.org/wiki/United_States_Census
-    // An eye
     // We'll start at the year 1860:
     double t0 = 1860;
     double time_step = 10;
@@ -77,7 +76,7 @@ int main()
     auto f = [=](double t){ return p(t) - 100000000; };
 
     // Boost includes a bisection algorithm, which is robust, though not as fast as some others 
-    // we provide, but lets try that first.  We need a termination condition for it, which
+    // we provide, but let's try that first.  We need a termination condition for it, which
     // takes the two endpoints of the range and returns either true (stop) or false (keep going),
     // we could use a predefined one such as boost::math::tools::eps_tolerance<double>, but that
     // won't stop until we have full double precision which is overkill, since we just need the