Docs mention "Spaceship Comparator"; link is broken

[abirkmanis]

Please complete the information below:

Where is the problem?

Spaceship Comparator (<=>)

What is the problem?

The link to spaceship operator is broken.

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Please don't change anything below this point.

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• Build ID: HHVM=HHVM-4.164.0:HSL=v4.108.1:2024-02-08T13:44:46+0000:1fa47f258c6b68f8ec01899aa82fd6ffa0957109
• Page requested: /hack/expressions-and-operators/introduction
• Page requested at: Thu, 20 Jun 2024 20:19:13 +0000
• Controller: GuidePageController

[fadinghorse]

The following pull request should address the problem on a different page, but it hasn't been merged yet.
#1363

Edit: Commit 664ecbb might address this.