Fix Authentication Flows Static and Dynamic Tab Issues

[VimDiesel123]

Changes

How it will work section

The current How it will work section is confusing. There is no code snippet in the Static tab. The code snippet which seems like it belongs in the Static tab of the How it will work section is inside of the Define the hooks section - even though it does not relate to defining hooks.

There is also a useful general explanation of how it will work which is only visible under the Dynamic tab. I've reorganized things to be more clear.

I've also tried to make the Static and Dynamic code snippets match each other more closely.

Define our screens section

The Define our screens section is similarly confusing. There is a section of text which pertains to the Dynamic tab but it appears in both the Static and the Dynamic tab.

Then there is a set of Tabs at the bottom. The code snippet in the Static Tab appears to be out of place but the code snippet in Dynamic Tab looks like it belongs inside the previous Dynamic tab. I've reorganized things to be more clear.

I've also removed a reference to an isSignout state in the text which doesn't appear in the code until a later section.

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[satya164]

Thanks for the PR. I have a few comments about the changes!