Remove erroneus characters in the block comment

Author: pablogsal

Modules/posixmodule.c

@@ -5359,9 +5359,7 @@ os_posix_spawn_impl(PyObject *module, path_t *path, PyObject *argv,
          * buffers. The use of `temp_buffer` here is a workaround that keeps the
          * python objects that own the buffers alive until posix_spawn gets called.
          * posix_spawn_file_actions_addopen copies the value of **path** except for
-         * some old * versions of * glibc (<2.20). The usage of temp_buffer is
-         * a workaround * to keep this temporary objects alive until posix_spawn
-         * gets called.
+         * some old versions of glibc (<2.20).
          * Check https://bugs.python.org/issue33630 and
          * https://sourceware.org/bugzilla/show_bug.cgi?id=17048 for more info.*/
         temp_buffer = PyList_New(0);