style: whitespaces fixed to make pre-commit happy

docs/defining_systems/angular_units.rst

@@ -63,7 +63,7 @@ Angular quantities in the :term:`SI`
 ------------------------------------
 
 Even though the :term:`SI` somehow ignores the dimensionality of angle:
-    
+
     Plane and solid angles, when expressed in radians and steradians respectively, are in effect
     also treated within the SI as quantities with the unit one. The symbols :math:`rad`
     and :math:`sr` are written explicitly where appropriate, in order to emphasize that, for radians or

docs/defining_systems/si.rst

@@ -201,28 +201,28 @@ Defining constants
 Those constants are provided in the *units/isq/si/constants.h* header file as::
 
     namespace units::isq::si::si2019 {
-    
+
     template<Representation Rep = double>
     inline constexpr auto hyperfine_structure_transition_frequency = frequency<hertz, Rep>(Rep{9'192'631'770});
-    
+
     template<Representation Rep = double>
     inline constexpr auto speed_of_light = speed<metre_per_second, Rep>(299'792'458);
-    
+
     template<Representation Rep = double>
     inline constexpr auto planck_constant = energy<joule, Rep>(6.62607015e-34) * time<second, Rep>(1);
-    
+
     template<Representation Rep = double>
     inline constexpr auto elementary_charge = electric_charge<coulomb, Rep>(1.602176634e-19);
-    
+
     template<Representation Rep = double>
     inline constexpr auto boltzmann_constant = energy<joule, Rep>(1.380649e-23) / thermodynamic_temperature<kelvin, Rep>(1);
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+
     template<Representation Rep = double>
     inline constexpr auto avogadro_constant = Rep(6.02214076e23) / amount_of_substance<mole, Rep>(1);
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+
     template<Representation Rep = double>
     inline constexpr auto luminous_efficacy = luminous_flux<lumen, Rep>(683) / power<watt, Rep>(1);
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+
     }
 
 .. note::