Description of flag `-H` was in 'verbosity options', moved to 'misc'.

Fixes #18699

docs/users_guide/using.rst

@@ -1255,14 +1255,6 @@ messages and in GHCi:
     the errors and warnings that originate later in the file are
     displayed first.
 
-.. ghc-flag:: -H ⟨size⟩
-    :shortdesc: Set the minimum size of the heap to ⟨size⟩
-    :type: dynamic
-    :category: misc
-
-    Set the minimum size of the heap to ⟨size⟩. This option is
-    equivalent to ``+RTS -Hsize``, see :ref:`rts-options-gc`.
-
 .. ghc-flag:: -Rghc-timing
     :shortdesc: Summarise timing stats for GHC (same as ``+RTS -tstderr``).
     :type: dynamic
@@ -1508,6 +1500,14 @@ Some flags only make sense for a particular use case.
     ``ghcversions.h`` file to be included. This is primarily intended to be
     used by GHC's build system.
 
+.. ghc-flag:: -H ⟨size⟩
+    :shortdesc: Set the minimum size of the heap to ⟨size⟩
+    :type: dynamic
+    :category: misc
+
+    Set the minimum size of the heap to ⟨size⟩. This option is
+    equivalent to ``+RTS -Hsize``, see :ref:`rts-options-gc`.
+
 Other environment variables
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~