Update repository names in README.md

[hezhizhen]

Updated Peltoche/lsd to lsd-rs in README.md.

---

TODO

• Use cargo fmt
• Add necessary tests
• Add changelog entry
• Update default config/theme in README (if applicable)
• Update man page at lsd/doc/lsd.md (if applicable)

[codecov-commenter]

Codecov Report

Merging #892 (56bc398) into master (7a9506d) will not change coverage.
The diff coverage is n/a.

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@@           Coverage Diff           @@
##           master     #892   +/-   ##
=======================================
  Coverage   86.53%   86.53%           
=======================================
  Files          49       49           
  Lines        4848     4848           
=======================================
  Hits         4195     4195           
  Misses        653      653           

Files Changed	Coverage Δ
src/flags/blocks.rs	96.61% <ø> (ø)
src/meta/date.rs	94.28% <ø> (ø)
src/meta/windows_utils.rs	0.00% <ø> (ø)

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[muniu-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: hezhizhen

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[zwpaper]

thanks for the contribution! @hezhizhen