tree-wide: fix typo and comment style update

src/basic/fileio.c

@@ -504,7 +504,7 @@ int read_virtual_file_fd(int fd, size_t max_size, char **ret_contents, size_t *r
                  * at least one more byte to be able to distinguish EOF from truncation. */
                 if (max_size != SIZE_MAX && n > max_size) {
                         n = size; /* Make sure we never use more than what we sized the buffer for (so that
-                                   * we have one free byte in it for the trailing NUL we add below).*/
+                                   * we have one free byte in it for the trailing NUL we add below). */
                         truncated = true;
                         break;
                 }