Grammar fixes in sc.tl docstrings

[zm711]

Been working with scanpy for a bit now and really appreciate all the work you're all doing. Noticed a few grammar mistakes in docstrings. If it's helpful I figured I could submit a couple PRs to fix up docstrings :) . As a demonstration this is just a quick rundown of the tools submodule. If this isn't desired just let me know.

• Closes # NA
• Tests included or not required because: I was just updating some docstrings to be slightly more idiomatic English so no api or meaning changes.

• Release notes not necessary because: Same as above. Meaning not changed for anything. Just grammar fixes. Although if you want something here let me know.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.36%. Comparing base (f7acd02) to head (be4b087).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3438   +/-   ##
=======================================
  Coverage   75.36%   75.36%           
=======================================
  Files         112      112           
  Lines       13219    13219           
=======================================
  Hits         9963     9963           
  Misses       3256     3256           

Files with missing lines	Coverage Δ
src/scanpy/tools/_dendrogram.py	83.33% <ø> (ø)
src/scanpy/tools/_diffmap.py	76.47% <ø> (ø)
src/scanpy/tools/_dpt.py	58.79% <ø> (ø)
src/scanpy/tools/_draw_graph.py	63.93% <ø> (ø)
src/scanpy/tools/_embedding_density.py	63.49% <ø> (ø)
src/scanpy/tools/_ingest.py	75.65% <ø> (ø)
src/scanpy/tools/_leiden.py	88.73% <ø> (ø)
src/scanpy/tools/_louvain.py	61.22% <ø> (ø)
src/scanpy/tools/_marker_gene_overlap.py	72.00% <ø> (ø)
src/scanpy/tools/_score_genes.py	86.66% <ø> (ø)
... and 3 more

[Zethson]

Great! Please keep the docstring improvements and fixes coming. A few minor points. I am not a native speaker and am happy to be convinced that my comments are not valid.

[Zethson]

Feel free to add a release note if you want this PR to be mentioned in the next release. Docstring improvements are important.

[zm711]

Feel free to add a release note if you want this PR to be mentioned in the next release. Docstring improvements are important.

Since I have a few modules to go maybe I could add a release note after I finish a few others (unless the release is super soon ). Then it would be something like docstring fixes (pr x pr x pr x). That seems cleaner to me.

[Zethson]

Sure, fine with me. We can group them later.