docs: quantity_point documentation fixed

docs/CMakeLists.txt

@@ -124,6 +124,7 @@ add_custom_command(OUTPUT "${SPHINX_INDEX_FILE}"
                        "${CMAKE_CURRENT_SOURCE_DIR}/reference/core/types/dimensions.rst"
                        "${CMAKE_CURRENT_SOURCE_DIR}/reference/core/types/prefixes.rst"
                        "${CMAKE_CURRENT_SOURCE_DIR}/reference/core/types/quantity.rst"
+                       "${CMAKE_CURRENT_SOURCE_DIR}/reference/core/types/quantity_point.rst"
                        "${CMAKE_CURRENT_SOURCE_DIR}/reference/core/types/units.rst"
                        "${CMAKE_CURRENT_SOURCE_DIR}/reference/core/types/utilities.rst"
                        "${CMAKE_CURRENT_SOURCE_DIR}/reference/core/types/utilities/basic_fixed_string.rst"

docs/framework/quantity_points.rst

@@ -3,7 +3,7 @@
 Quantity Points
 ===============
 
-A :term:`quantity point` is an absolute quantity with respect to zero
+A `quantity point` is an absolute quantity with respect to zero
 (which represents some origin) and is represented in the library with a
 `quantity_point` class template.
 

docs/reference/core/concepts.rst

@@ -73,3 +73,8 @@ Concepts
       the elements of `ratio`), :expr:`T * T` and :expr:`T / T` must be valid,
     - otherwise, :expr:`T * std::int64_t`, :expr:`std::int64_t * T`, and :expr:`T / std::int64_t`
       must be valid.
+
+.. concept:: template<typename T> QuantityPoint
+
+    A concept matching all quantity points in the library. Satisfied by all instantiations of
+    :class:`quantity_point`.

docs/reference/core/types.rst

@@ -5,6 +5,7 @@ Types
     :maxdepth: 1
 
     types/quantity
+    types/quantity_point
     types/dimensions
     types/units
     types/prefixes

docs/reference/core/types/quantity_point.rst

@@ -0,0 +1,6 @@
+Quantity Point
+==============
+
+.. doxygenclass:: units::quantity_point
+   :members:
+   :undoc-members: