docs: fix unnecessary double white space

There's no need for double white spaces here so let's just remove them.

Cc: Quentin Schulz <foss+yocto@0leil.net>
(From yocto-docs rev: e41f6689157359777c3d86d9a7afed6f9e43782b)

Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Reviewed-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/dev-manual/init-manager.rst

@@ -53,7 +53,7 @@ The ":ref:`device-manager`" chapter has more details about device managers.
 Using SysVinit with udev
 =========================
 
-SysVinit with  the udev device manager corresponds to the
+SysVinit with the udev device manager corresponds to the
 default setting in Poky. This corresponds to setting::
 
    INIT_MANAGER = "sysvinit"

documentation/dev-manual/new-recipe.rst

@@ -1603,7 +1603,7 @@ in the BitBake User Manual.
    space. Also, the operator is applied after all the ``+=``, and ``=+``
    operators have been applied and after all ``=`` assignments have
    occurred. This means that if ``:append`` is used in a recipe, it can
-   only be overridden by another layer using the  special ``:remove``
+   only be overridden by another layer using the special ``:remove``
    operator, which in turn will prevent further layers from adding it back.
 
    The following example shows the space being explicitly added to the

documentation/dev-manual/upgrading-recipes.rst

@@ -73,7 +73,7 @@ The following steps describe how to set up the AUH utility:
    onto your development host. The following command uses Git to create
    a local copy of the repository on your system::
 
-      $ git clone  git://git.yoctoproject.org/auto-upgrade-helper
+      $ git clone git://git.yoctoproject.org/auto-upgrade-helper
       Cloning into 'auto-upgrade-helper'... remote: Counting objects: 768, done.
       remote: Compressing objects: 100% (300/300), done.
       remote: Total 768 (delta 499), reused 703 (delta 434)