bpf, docs: BPF Iterator Document

Fix the description of the seq_info field of the bpf_iter_reg structure which
was wrong due to an accidental copy/paste of the previous field's description.

Fixes: 8972e18a439d ("bpf, docs: BPF Iterator Document")
Signed-off-by: Anton Protopopov <[e-mail]>
Signed-off-by: Daniel Borkmann <[e-mail]>
Acked-by: Yonghong Song <[e-mail]>
Link: https://lore.kernel.org/bpf/[e-mail]

Documentation/bpf/bpf_iterators.rst

···
        that the kernel function cond_resched() is called to avoid other kernel
        subsystem (e.g., rcu) misbehaving.
    * - seq_info
-     - Specifies certain action requests in the kernel BPF iterator
-       infrastructure. Currently, only BPF_ITER_RESCHED is supported. This means
-       that the kernel function cond_resched() is called to avoid other kernel
-       subsystem (e.g., rcu) misbehaving.
-
+     - Specifies the set of seq operations for the BPF iterator and helpers to
+       initialize/free the private data for the corresponding ``seq_file``.
 
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 <https://lore.kernel.org/bpf/[e-mail]/>`_