doc: fix image link.

[tao12345666333]

Signed-off-by: Jintao Zhang zhangjintao9020@gmail.com

What this PR does / why we need it:
doc: fix base image link.

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[k8s-ci-robot]

Hi @tao12345666333. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[aledbf]

/ok-to-test

[aledbf]

/hold

(until we release 0.25)

[aledbf]

/test pull-ingress-nginx-test

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Codecov Report

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@@            Coverage Diff            @@
##             master    #4277   +/-   ##
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  Coverage          ?   58.23%           
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  Files             ?       87           
  Lines             ?     6489           
  Branches          ?        0           
=========================================
  Hits              ?     3779           
  Misses            ?     2282           
  Partials          ?      428

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[aledbf]

/hold cancel
/lgtm

[aledbf]

@tao12345666333 thanks!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aledbf, tao12345666333

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• images/OWNERS [aledbf]

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