docs: grammatical corrections

[DePasqualeOrg]

This PR corrects two grammatical issues:

• A few instances of a missing hyphen in "server-side rendering"
• A common mistake in which "as such" is used as a synonym for "therefore", "thus", "so", "this means that", "for this reason", etc.

To illustrate the second issue, this sentence uses "as such" correctly:

reroute is considered a pure, idempotent function. As such, it must always return the same output for the same input and not have side effects.

The rule of thumb is that "such" should be able to be replaced with a noun phrase from the previous sentence:

reroute is considered a pure, idempotent function. As [a pure, idempotent function], it must always return the same output for the same input and not have side effects.

This sentence uses "as such" incorrectly:

For instance, if condition is true in the code snippet below, the code inside the if block will run and color will be evaluated. As such, changes to either condition or color will cause the effect to re-run.

In this case, I've replaced "As such" with "This means that", since "such" does not refer to an aforementioned noun phrase that could logically be the subject of the sentence. "as such" is not a synonym for "this means that":

For instance, if condition is true in the code snippet below, the code inside the if block will run and color will be evaluated. This means that changes to either condition or color will cause the effect to re-run.

[vercel]

@DePasqualeOrg is attempting to deploy a commit to the Svelte Team on Vercel.

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[benmccann]

Please read the message in the PR description:

If this is a documentation PR (i.e. changing content within apps/svelte.dev/content/docs), then this is the wrong repository to make those changes. The content in this folder is synced from other repositories. Therefore, these changes should be made in their respective repositories (at https://github.com/sveltejs/svelte or https://github.com/sveltejs/kit, or example).

[DePasqualeOrg]

Whoops, sorry about that. I've updated this PR to only include the texts that belong to this repo. You can find the other changes in sveltejs/kit#14101 and sveltejs/svelte#16550.