Update documentation for CARAVAN_CACHE variable

[MarkMelotto]

Clarify the environmental variable path for CARAVAN_CACHE.

It is nice to know how to actually use it :)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.17%. Comparing base (b594838) to head (ab6bbd5).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #495   +/-   ##
=======================================
  Coverage   79.17%   79.17%           
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  Files          28       28           
  Lines        1882     1882           
  Branches      168      168           
=======================================
  Hits         1490     1490           
  Misses        330      330           
  Partials       62       62           

Files with missing lines	Coverage Δ
src/ewatercycle/_forcings/caravan.py	83.01% <ø> (ø)

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[MarkMelotto]

@BSchilperoort when you have time, please take a look, should not take more than a minute!

[BSchilperoort]

This is a more generic way to put it I think. Not every ewatercycle setup needs to have dcache, it's just what we use because it's the most convenient thing SURF offers for this.

[MarkMelotto]

@BSchilperoort there is this new rule that wants to change lines like:
dataset: str = basin_id.split("_")[0]

to:

parts = basin_id.split("_")
dataset = parts[0]

I think that makes readability worse, so quick check if you agree

[BSchilperoort]

@BSchilperoort there is this new rule that wants to change lines like: dataset: str = basin_id.split("_")[0]

to:

parts = basin_id.split("_")
dataset = parts[0]

I think that makes readability worse, so quick check if you agree

I agree!