Help: remove links from pages to themselves

At least the top-reference links. Internal `:ref:` usages have been left
intact.

Help/command/add_library.rst

@@ -83,7 +83,7 @@ Object Libraries
 
 Creates an :ref:`Object Library <Object Libraries>`.  An object library
 compiles source files but does not archive or link their object files into a
-library.  Instead other targets created by :command:`add_library` or
+library.  Instead other targets created by ``add_library`` or
 :command:`add_executable` may reference the objects using an expression of the
 form :genex:`$\<TARGET_OBJECTS:objlib\> <TARGET_OBJECTS>` as a source, where
 ``objlib`` is the object library name.  For example:

Help/command/execute_process.rst

@@ -52,7 +52,7 @@ Options:
  redirect stdin, stdout, and stderr.)
 
  If a sequential execution of multiple commands is required, use multiple
- :command:`execute_process` calls with a single ``COMMAND`` argument.
+ ``execute_process`` calls with a single ``COMMAND`` argument.
 
 ``WORKING_DIRECTORY``
  The named directory will be set as the current working directory of

Help/command/include_guard.rst

@@ -13,7 +13,7 @@ Sets up an include guard for the current CMake file (see the
 :variable:`CMAKE_CURRENT_LIST_FILE` variable documentation).
 
 CMake will end its processing of the current file at the location of the
-:command:`include_guard` command if the current file has already been
+``include_guard`` command if the current file has already been
 processed for the applicable scope (see below). This provides functionality
 similar to the include guards commonly used in source headers or to the
 ``#pragma once`` directive. If the current file has been processed previously

Help/command/install.rst

@@ -32,7 +32,7 @@ are executed in order during installation.
 
 .. versionchanged:: 3.22
   The environment variable :envvar:`CMAKE_INSTALL_MODE` can override the
-  default copying behavior of :command:`install()`.
+  default copying behavior of ``install()``.
 
 There are multiple signatures for this command.  Some of them define
 installation options for files and targets.  Options common to

Help/command/return.rst

@@ -30,7 +30,7 @@ command.  All arguments are ignored unless that policy is set to ``NEW``.
   with the :command:`block` command, as described below.
 
   The ``PROPAGATE`` option can be very useful in conjunction with the
-  :command:`block` command.  A :command:`return` will propagate the
+  :command:`block` command.  A ``return`` will propagate the
   specified variables through any enclosing block scopes created by the
   :command:`block` commands.  Inside a function, this ensures the variables
   are propagated to the function's caller, regardless of any blocks within

Help/command/try_compile.rst

@@ -271,7 +271,7 @@ Other Behavior Settings
   If :policy:`CMP0083` is set to ``NEW``, then in order to obtain correct
   behavior at link time, the ``check_pie_supported()`` command from the
   :module:`CheckPIESupported` module must be called before using the
-  :command:`try_compile` command.
+  ``try_compile`` command.
 
 The current settings of :policy:`CMP0065` and :policy:`CMP0083` are propagated
 through to the generated test project.