Fix typo in install.md

[FogDong]

Changes

Fix typo in install.md

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Release Notes

Fix typo in install.md

[tekton-robot]

Hi @FogDong. Thanks for your PR.

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[tekton-robot]

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[tekton-robot]

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Available kind/ labels are:

kind/bug: Categorizes issue or PR as related to a bug.
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[tekton-robot]

This PR cannot be merged: expecting exactly one kind/ label

Available kind/ labels are:

kind/bug: Categorizes issue or PR as related to a bug.
kind/flake: Categorizes issue or PR as related to a flakey test
kind/cleanup: Categorizes issue or PR as related to cleaning up code, process, or technical debt.
kind/design: Categorizes issue or PR as related to design.
kind/documentation: Categorizes issue or PR as related to documentation.
kind/feature: Categorizes issue or PR as related to a new feature.
kind/misc: Categorizes issue or PR as a miscellaneuous one.

[withlin]

/kind misc

[jlpettersson]

/ok-to-test
/lgtm

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jlpettersson, sbwsg

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[ghost]

/lgtm