Update scrape docs for --refs

[Cisphyx]

No description provided.

[codecov]

Codecov Report

Merging #1803 into master will decrease coverage by 0.06%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1803      +/-   ##
==========================================
- Coverage   96.14%   96.07%   -0.07%     
==========================================
  Files         139      139              
  Lines       26671    26671              
==========================================
- Hits        25642    25624      -18     
- Misses       1029     1047      +18     

Flag	Coverage Δ
#linux	96.07% <ø> (-0.07%)	⬇️
#linux_replay	66.01% <ø> (-0.01%)	⬇️

Impacted Files	Coverage Δ
synapse/lib/spawn.py	89.03% <0.00%> (-6.46%)	⬇️
synapse/common.py	96.41% <0.00%> (-0.33%)	⬇️
synapse/lib/lmdbslab.py	99.05% <0.00%> (+0.20%)	⬆️
synapse/lib/nexus.py	96.72% <0.00%> (+0.36%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f6e45f7...fa8e322. Read the comment docs.