doc: board: toradex: fix file names

Fix the documentation file names: s/apalix/apalis/.

Fixes: e98ea49a0e ("toradex: MAINTAINERS: entries for new reST docs")
Fixes: 3730106cf0 ("doc: board: apalis-imx8x: add documentation")
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
Reviewed-by: Igor Opaniuk <igor.opaniuk@foundries.io>
Acked-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

board/toradex/apalis-imx8/MAINTAINERS

@@ -6,5 +6,5 @@ F:	arch/arm/dts/fsl-imx8-apalis.dts
 F:	arch/arm/dts/fsl-imx8-apalis-u-boot.dtsi
 F:	board/toradex/apalis-imx8/
 F:	configs/apalis-imx8_defconfig
-F:	doc/board/toradex/apalix-imx8.rst
+F:	doc/board/toradex/apalis-imx8.rst
 F:	include/configs/apalis-imx8.h

doc/board/toradex/index.rst

@@ -6,8 +6,8 @@ Toradex
 .. toctree::
    :maxdepth: 2
 
-   apalix-imx8
-   apalix-imx8x
+   apalis-imx8
+   apalis-imx8x
    colibri_imx7
    colibri-imx8x
    verdin-imx8mm