manuals: add missing references to SDKMACHINE and SDK_ARCH

diff --git a/documentation/overview-manual/concepts.rst b/documentation/overview-manual/concepts.rst
index 75eb872b32..931bec79e8 100644
--- a/documentation/overview-manual/concepts.rst
+++ b/documentation/overview-manual/concepts.rst
@@ -1482,12 +1482,11 @@  relocatable SDK used to develop applications. When you run the
 installer, it installs the toolchain, which contains the development
 tools (e.g., ``gcc-cross-canadian``, ``binutils-cross-canadian``, and
 other ``nativesdk-*`` tools), which are tools native to the SDK (i.e.
-native to :term:`SDK_ARCH`), you
-need to cross-compile and test your software. The figure shows the
-commands you use to easily build out this toolchain. This
-cross-development toolchain is built to execute on the
-:term:`SDKMACHINE`, which might or
-might not be the same machine as the Build Host.
+native to :term:`SDK_ARCH`), you need to cross-compile and test your
+software. The figure shows the commands you use to easily build out
+this toolchain. This cross-development toolchain is built to execute on the
+:term:`SDKMACHINE`, which might or might not be the same machine as
+the Build Host.
 
 .. note::
 
diff --git a/documentation/sdk-manual/appendix-obtain.rst b/documentation/sdk-manual/appendix-obtain.rst
index 7a09a83af8..7d62293cd6 100644
--- a/documentation/sdk-manual/appendix-obtain.rst
+++ b/documentation/sdk-manual/appendix-obtain.rst
@@ -132,22 +132,21 @@  build the SDK installer. Follow these steps:
 5. *Make Sure Your SDK Machine is Correctly Set:* If you are building a
    toolchain designed to run on an architecture that differs from your
    current development host machine (i.e. the build host), be sure that
-   the :term:`SDKMACHINE` variable
-   in the ``local.conf`` file in your Build Directory is correctly set.
+   the :term:`SDKMACHINE` variable in the ``local.conf`` file in your
+   Build Directory is correctly set.
 
    .. note::
 
       If you are building an SDK installer for the Extensible SDK, the
-      SDKMACHINE
-      value must be set for the architecture of the machine you are
-      using to build the installer. If
-      SDKMACHINE
+      :term:`SDKMACHINE` value must be set for the architecture of the
+      machine you are using to build the installer. If :term:`SDKMACHINE`
       is not set appropriately, the build fails and provides an error
       message similar to the following::
 
-              The extensible SDK can currently only be built for the same architecture as the machine being built on - SDK_ARCH is
-              set to i686 (likely via setting SDKMACHINE) which is different from the architecture of the build machine (x86_64).
-              Unable to continue.
+         The extensible SDK can currently only be built for the same
+         architecture as the machine being built on --- :term:`SDK_ARCH`
+         is set to ``i686`` (likely via setting :term:`SDKMACHINE`) which is
+         different from the architecture of the build machine (``x86_64``).
 
 
 6. *Build the SDK Installer:* To build the SDK installer for a standard
diff --git a/documentation/test-manual/understand-autobuilder.rst b/documentation/test-manual/understand-autobuilder.rst
index c5e32cfe09..bfd75c81e0 100644
--- a/documentation/test-manual/understand-autobuilder.rst
+++ b/documentation/test-manual/understand-autobuilder.rst
@@ -56,7 +56,7 @@  the "templates" section, which looks like::
 
 Combining these two entries you can see that "qemux86-64" is a three step build where the
 ``bitbake BBTARGETS`` would be run, then ``bitbake SANITYTARGETS`` for each step; all for
-``MACHINE="qemux86-64"`` but with differing SDKMACHINE settings. In step
+``MACHINE="qemux86-64"`` but with differing :term:`SDKMACHINE` settings. In step
 1 an extra variable is added to the ``auto.conf`` file to enable wic
 image generation.