Accessibility: Update code intel wording

Created by: umpox

Closes https://github.com/sourcegraph/sourcegraph/issues/35189

Small copy change as "N/A" was deemed to be unreadable for screen readers.

Thought: We should probably implement a lint rule if we notice these acronyms causing us issues

Test plan

N/A - Minimal copy change

App preview:

• Web
• Storybook

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