Fix torchdata install command: use index-url for pip install

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:white_check_mark: You can merge normally! (13 Unrelated Failures)

As of commit 057f0e6f03a0171851c73a643975896f72f6af2a with merge base c0d0685a8a6e4c5a0f05629330c3a2d1bc5596d0 ():

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

* [Bandit / build](https://hud.pytorch.org/pr/pytorch/text/2218#19350618147) ([gh](https://github.com/pytorch/text/actions/runs/7108052188/job/19350618147)) * [Build documentation / build / Build doc](https://hud.pytorch.org/pr/pytorch/text/2218#19350618660) ([gh](https://github.com/pytorch/text/actions/runs/7108052247/job/19350618660)) * [Build M1 Wheels / pytorch/text / wheel-py3_8-cpu](https://hud.pytorch.org/pr/pytorch/text/2218#19350623934) ([gh](https://github.com/pytorch/text/actions/runs/7108052238/job/19350623934)) * [Integration Test / tests (3.8) / linux-job](https://hud.pytorch.org/pr/pytorch/text/2218#19350618718) ([gh](https://github.com/pytorch/text/actions/runs/7108052233/job/19350618718)) * [Unit-tests on Linux CPU / tests (3.10) / linux-job](https://hud.pytorch.org/pr/pytorch/text/2218#19350618487) ([gh](https://github.com/pytorch/text/actions/runs/7108052216/job/19350618487)) * [Unit-tests on Linux CPU / tests (3.8) / linux-job](https://hud.pytorch.org/pr/pytorch/text/2218#19350618766) ([gh](https://github.com/pytorch/text/actions/runs/7108052216/job/19350618766)) * [Unit-tests on Linux CPU / tests (3.9) / linux-job](https://hud.pytorch.org/pr/pytorch/text/2218#19350619057) ([gh](https://github.com/pytorch/text/actions/runs/7108052216/job/19350619057)) * [Unit-tests on Linux GPU / tests (3.8, 11.7) / linux-job](https://hud.pytorch.org/pr/pytorch/text/2218#19350618722) ([gh](https://github.com/pytorch/text/actions/runs/7108052245/job/19350618722)) * [Unit-tests on Macos CPU / tests (3.10) / macos-job](https://hud.pytorch.org/pr/pytorch/text/2218#19350618861) ([gh](https://github.com/pytorch/text/actions/runs/7108052246/job/19350618861)) * [Unit-tests on Macos CPU / tests (3.8) / macos-job](https://hud.pytorch.org/pr/pytorch/text/2218#19350619248) ([gh](https://github.com/pytorch/text/actions/runs/7108052246/job/19350619248)) * [Unit-tests on Macos CPU / tests (3.9) / macos-job](https://hud.pytorch.org/pr/pytorch/text/2218#19350619842) ([gh](https://github.com/pytorch/text/actions/runs/7108052246/job/19350619842)) * [Unit-tests on Windows CPU / tests (3.8) / windows-job](https://hud.pytorch.org/pr/pytorch/text/2218#19350618919) ([gh](https://github.com/pytorch/text/actions/runs/7108052228/job/19350618919)) * [Unit-tests on Windows CPU / tests (3.9) / windows-job](https://hud.pytorch.org/pr/pytorch/text/2218#19350619316) ([gh](https://github.com/pytorch/text/actions/runs/7108052228/job/19350619316))

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