fix trailing space

Author: changkhothuychung

include/beman/optional26/optional.hpp

@@ -536,7 +536,7 @@ class optional {
         static_assert(!std::is_array_v<U>, "U must not be an array");
         static_assert(!std::is_same_v<U, in_place_t>, "U must not be an inplace type");
         static_assert(!std::is_same_v<U, nullopt_t>, "U must not be nullopt_t");
-        static_assert(std::is_object_v<U> || std::is_reference_v<U>, 
+        static_assert(std::is_object_v<U> || std::is_reference_v<U>,
                       "U must be either an object or a reference"); /// References now allowed
         return (has_value()) ? optional<U>{std::invoke(std::forward<F>(f), value_)} : optional<U>{};
     }
@@ -547,7 +547,7 @@ class optional {
         static_assert(!std::is_array_v<U>, "U must not be an array");
         static_assert(!std::is_same_v<U, in_place_t>, "U must not be an inplace type");
         static_assert(!std::is_same_v<U, nullopt_t>, "U must not be nullopt_t type");
-        static_assert(std::is_object_v<U> || std::is_reference_v<U>, 
+        static_assert(std::is_object_v<U> || std::is_reference_v<U>,
                       "U must be either an objecy or a reference"); /// References now allowed
         return (has_value()) ? optional<U>{std::invoke(std::forward<F>(f), std::move(value_))} : optional<U>{};
     }