check: run pre-commit on all files

docs/reference/core/concepts.rst

@@ -144,11 +144,11 @@ Concepts
 .. concept:: template<typename QK1, typename QK2> QuantityKindEquivalentTo
 
     A concept matching two equivalent quantity kinds. Satisfied by quantity kinds having equivalent kinds.
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+
 .. concept:: template<typename QPK, typename PK> QuantityPointKindOf
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     A concept matching only quantity point kinds of a specific point kind.
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     :tparam QPK: Quantity point kind to verify.
     :tparam PK: Point kind type to use for verification.
 

docs/reference/systems/isq.rst

@@ -12,7 +12,7 @@ International System of Quantities (ISQ)
 
 Systems of Units based on the SI
 --------------------------------
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 .. toctree::
     :maxdepth: 2