{#-
Override of alabaster's default navigation.html.
Default ships an `
Navigation
` that stacks visually with our
toctree's `:caption: Navigation` — readers see the word twice in a
row. Renaming the sidebar header to "Table of Contents" (which is
what it actually is) keeps "Navigation" as the *first section name*
inside the TOC, where it's correct + non-redundant.
-#}