update docs

Author: SteveBronder

stan/math/prim/fun/inv_logit.hpp

@@ -74,7 +74,7 @@ struct inv_logit_fun {
 };
 
 /**
- * Vectorized version of inv_logit() for std::vector's containing ad types.
+ * Vectorized version of inv_logit() for containers containing ad types.
  *
  * @tparam T type of std::vector
  * @param x std::vector
@@ -90,11 +90,10 @@ inline auto inv_logit(Container&& x) {
 }
 
 /**
- * Vectorized version of inv_logit() for Eigen types.
+ * Vectorized version of inv_logit() for containers with arithmetic scalar types.
  *
- * @tparam T A type of either `std::vector` whose inner type inherits from
- * `Eigen::DenseBase` or a type that directly inherits from `Eigen::DenseBase`.
- * The inner scalar type must not have a `var` scalar type.
+ * @tparam T A type of either `std::vector` or a type that directly inherits from `Eigen::DenseBase`.
+ * The inner scalar type must not have an auto diff scalar type.
  * @param x Eigen expression
  * @return Inverse logit applied to each value in x.
  */