sphinx: ref-manual: fix typo

The variable name is SSTATE_MIRROR, not STATE_MIRROR, and because of
the typo, it was not caught by the Python regexp.

(From yocto-docs rev: 7347f5343c4995c53da6b9a88a3912453def9669)

Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/documentation/ref-manual/ref-classes.rst b/documentation/ref-manual/ref-classes.rst
index 1685483363..6449b49cd4 100644
--- a/documentation/ref-manual/ref-classes.rst
+++ b/documentation/ref-manual/ref-classes.rst
@@ -855,8 +855,8 @@ using an empty :term:`PARALLEL_MAKE` variable.
 
 Inheriting the ``icecc`` class changes all sstate signatures.
 Consequently, if a development team has a dedicated build system that
-populates ```STATE_MIRRORS`` <#var-SSTATE_MIRRORS>`__ and they want to
-reuse sstate from ``STATE_MIRRORS``, then all developers and the build
+populates :term:`SSTATE_MIRRORS` and they want to
+reuse sstate from ``SSTATE_MIRRORS``, then all developers and the build
 system need to either inherit the ``icecc`` class or nobody should.
 
 At the distribution level, you can inherit the ``icecc`` class to be