Fix typos in DEVELOPMENT.md file

[shankarpentyala07]

Changes

1. In DEVELOPMENT.md file , to configure upstream optional , while set up a fork , the instructions throws an error when used in zsh shell , because of # symbol not found.
2. In setup cluster of type kind , the word kind is in Camel case Kind , changed it to lower case kind
3. The update or add new crd types in Iterating on code changes section, doesn't navigate and has been corrected.

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Release Notes

NONE

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[shankarpentyala07]

/kind documentation

[dibyom]

/ok-to-test

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dibyom, Yongxuanzhang

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[jerop]

/lgtm