add loading notebook to toc

[dougbrn]

Small fix to add data loading notebook to the tutorials TOC

[github-actions]

Before [45d990e]	After [a1950ed]	Ratio	Benchmark (Parameter)
31.7±2ms	36.8±3ms	~1.16	benchmarks.AssignSingleDfToNestedSeries.time_run
257M	262M	1.02	benchmarks.AssignSingleDfToNestedSeries.peakmem_run
6.53±0.1ms	6.68±0.2ms	1.02	benchmarks.NestedFrameQuery.time_run
270M	277M	1.02	benchmarks.ReassignHalfOfNestedSeries.peakmem_run
86.4M	86.4M	1.00	benchmarks.NestedFrameAddNested.peakmem_run
9.33±0.2ms	9.30±0.1ms	1.00	benchmarks.NestedFrameAddNested.time_run
89.5M	89.5M	1.00	benchmarks.NestedFrameReduce.peakmem_run
90.7M	89.5M	0.99	benchmarks.NestedFrameQuery.peakmem_run
5.39±0.1ms	5.35±0.04ms	0.99	benchmarks.NestedFrameReduce.time_run
63.6±3ms	62.5±2ms	0.98	benchmarks.ReassignHalfOfNestedSeries.time_run

Click here to view all benchmarks.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.68%. Comparing base (45d990e) to head (7a631a0).
Report is 69 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #86   +/-   ##
=======================================
  Coverage   98.68%   98.68%           
=======================================
  Files          15       15           
  Lines         836      836           
=======================================
  Hits          825      825           
  Misses         11       11           

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[wilsonbb]

Thanks for catching!