docs for analysis.align.AverageStructure are missing

[orbeckst]

Expected behavior

analysis.align.AverageStructure (new in 1.0.0) is documented

mdanalysis/package/MDAnalysis/analysis/align.py

Line 699 in f0899e4

class AverageStructure(AnalysisBase):

Actual behavior

Not found in 1.0.0 or later docs https://docs.mdanalysis.org/1.0.0/documentation_pages/analysis/align.html

Current version of MDAnalysis

• Which version are you using? (run python -c "import MDAnalysis as mda; print(mda.__version__)") ≥ 1.0.0