Clarify docstring for MontyDB and add missing self.database property

[Andrew-S-Rosen]

Closes #796 in terms of clarifying the docstring.

I also added the missing self.database property because otherwise when you do MontyStore().name you get the following back:

----> 1 store.name

File ~/software/miniconda/envs/quacc/lib/python3.9/site-packages/maggma/stores/mongolike.py:956, in MontyStore.name(self)
    953 @property
    954 def name(self) -> str:
    955     """Return a string representing this data source."""
--> 956     return f"monty://{self.database_path}/{self.database}/{self.collection_name}"

AttributeError: 'MontyStore' object has no attribute 'database'

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.03 🎉

Comparison is base (cd7b6e0) 88.20% compared to head (7190fdd) 88.23%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #806      +/-   ##
==========================================
+ Coverage   88.20%   88.23%   +0.03%     
==========================================
  Files          44       44              
  Lines        3587     3588       +1     
==========================================
+ Hits         3164     3166       +2     
+ Misses        423      422       -1     

Impacted Files	Coverage Δ
src/maggma/cli/multiprocessing.py	94.73% <100.00%> (ø)
src/maggma/cli/serial.py	79.31% <100.00%> (ø)
src/maggma/stores/aws.py	91.74% <100.00%> (ø)
src/maggma/stores/mongolike.py	88.54% <100.00%> (+0.29%)	⬆️
src/maggma/utils.py	95.72% <100.00%> (ø)

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[Andrew-S-Rosen]

@rkingsbury: this is ready to merge once the tests pass. See the linked issue for an explanation. The tl;dr is that this feature isn't available in montydb.

[rkingsbury]

Thanks for investigating @arosen93! The python 3.11 test failure is unrelated and will be addressed separately.