This file is indexed.

/usr/share/zsh/help/suspend is in zsh-common 5.3.1-4.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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suspend [ -f ]
       Suspend the execution of the shell (send it a SIGTSTP) until  it
       receives  a  SIGCONT.   Unless the -f option is given, this will
       refuse to suspend a login shell.