Update binary installation procedure

[jaradtke-aws]

Issue #, if available:
The methods demonstrating who to install eksctl, eksctl-anywhere, and kubectl were not following best-practice.

Description of changes:
I am mirroring the process called out in another page:
https://anywhere.eks.amazonaws.com/docs/getting-started/install/

Testing (if applicable):
N/A - following other examples.

Documentation added/planned (if applicable):

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[eks-distro-bot]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b5557c8) 73.34% compared to head (46e28bb) 71.57%.
Report is 712 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7125      +/-   ##
==========================================
- Coverage   73.34%   71.57%   -1.78%     
==========================================
  Files         449      545      +96     
  Lines       37329    42350    +5021     
==========================================
+ Hits        27380    30312    +2932     
- Misses       8314    10345    +2031     
- Partials     1635     1693      +58     

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[abhay-krishna]

Closing as these changes have been merged in #7252.

[abhay-krishna]

/close

[eks-distro-bot]

@abhay-krishna: Closed this PR.

In response to this:

/close

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