8364346: Typo in IR framework README

[Harshit470250]

This PR fixes the typo(from "DExcluceRandom" to "DExcludeRandom") and removes the extra line.

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Progress

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Error

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Issue

• JDK-8364346: Typo in IR framework README (Bug - P5)

Reviewing

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Update a local copy of the PR:
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https://git.openjdk.org/jdk/pull/26925.diff

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[Harshit470250]

/covered

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