fix doc string error

Author: heltonmc

src/besseli.jl

@@ -160,9 +160,9 @@ end
 #
 
 """
-    besselk(x::T) where T <: Union{Float32, Float64}
+    besseli(x::T) where T <: Union{Float32, Float64}
 
-Modified Bessel function of the second kind of order nu, ``K_{nu}(x)``.
+Modified Bessel function of the second kind of order nu, ``I_{nu}(x)``.
 """
 function besseli(nu::Real, x::T) where T
     isinteger(nu) && return besseli(Int(nu), x)

src/besselk.jl

@@ -402,7 +402,7 @@ function besselk_power_series(v, x::T) where T
         tmp *= inv(gam_1mv * gam_1mnv * fact_k)
         term = t1 * tmp
         out += term
-        abs(term / out) < eps(T) && return out
+        abs(term / out) < eps(T) && break
         (gam_1mnv, gam_1mv) = (gam_1mnv*(one(T) + v + k), gam_1mv*(one(T) - v + k)) 
         xd2_pow *= zz
         fact_k *= k + one(T)