sdk-manual: use built-in footnotes

The current HTML output is bogus, because we have a fix of * and \.
Sphinx has built-in footnotes that can be used in this specific
example. let's use that instead.

(From yocto-docs rev: ebac4486e711152962bb8cd22b55ddce332b07f6)

Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 5be36103ca1102c995915a20bf881e43920595e3)
Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 13 insertions, 20 deletions

diff --git a/documentation/sdk-manual/sdk-intro.rst b/documentation/sdk-manual/sdk-intro.rst
index 5a346fa6e6..acb3f455c5 100644
--- a/documentation/sdk-manual/sdk-intro.rst
+++ b/documentation/sdk-manual/sdk-intro.rst
@@ -84,9 +84,9 @@ when considering which to build:
 +-----------------------+-----------------------+-----------------------+
 | *Feature*             | *Standard SDK*        | *Extensible SDK*      |
 +=======================+=======================+=======================+
-| Toolchain             | Yes                   | Yes\*                 |
+| Toolchain             | Yes                   | Yes [1]_              |
 +-----------------------+-----------------------+-----------------------+
-| Debugger              | Yes                   | Yes\*                 |
+| Debugger              | Yes                   | Yes [1]_              |
 +-----------------------+-----------------------+-----------------------+
 | Size                  | 100+ MBytes           | 1+ GBytes (or 300+    |
 |                       |                       | MBytes for minimal    |
@@ -98,29 +98,22 @@ when considering which to build:
 +-----------------------+-----------------------+-----------------------+
 | Updateable            | No                    | Yes                   |
 +-----------------------+-----------------------+-----------------------+
-| Managed Sysroot*\*    | No                    | Yes                   |
+| Managed Sysroot [2]_  | No                    | Yes                   |
 +-----------------------+-----------------------+-----------------------+
-| Installed Packages    | No**\*                | Yes***\*              |
+| Installed Packages    | No  [3]_              | Yes  [4]_             |
 +-----------------------+-----------------------+-----------------------+
 | Construction          | Packages              | Shared State          |
 +-----------------------+-----------------------+-----------------------+
 
-\* Extensible SDK contains the toolchain and debugger if
-:term:`SDK_EXT_TYPE` is "full"
-or
-:term:`SDK_INCLUDE_TOOLCHAIN`
-is "1", which is the default.
-
-\*\* Sysroot is managed through the use of
-``devtool``. Thus, it is less likely that you will corrupt your SDK
-sysroot when you try to add additional libraries.
-
-\*\*\* You can add
-runtime package management to the standard SDK but it is not supported
-by default.
-
-\*\*\*\* You must build and make the shared state available to
-extensible SDK users for "packages" you want to enable users to install.
+.. [1] Extensible SDK contains the toolchain and debugger if :term:`SDK_EXT_TYPE`
+       is "full" or :term:`SDK_INCLUDE_TOOLCHAIN` is "1", which is the default.
+.. [2] Sysroot is managed through the use of ``devtool``. Thus, it is less
+       likely that you will corrupt your SDK sysroot when you try to add
+       additional libraries.
+.. [3] You can add runtime package management to the standard SDK but it is not
+       supported by default.
+.. [4] You must build and make the shared state available to extensible SDK
+       users for "packages" you want to enable users to install.
 
 The Cross-Development Toolchain
 -------------------------------