Update orgmode glyph

[Finii]

[why] The glyph is needlessly detailed (for a font). There is another, more simple glyph, which is also used by fileicons.

More details see PR #833.

Reported-by: tecosaur [email protected] Signed-off-by: Fini Jastrow [email protected]

Requirements / Checklist

• [x] Read the Contributing Guidelines
• [x] Verified the license of any newly added font, glyph, or glyph set

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