This file is indexed.

/usr/share/zsh/help/suspend is in zsh-common 5.1.1-1ubuntu2.3.

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.