correction in tree download links

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>

content/download.md

@@ -4,6 +4,9 @@ date: 2018-07-03
 draft: false
 ---
 
+PowerEL is a free ''as in beer'' Linux distribution.  
+
+
 ## Tree Download ##
 
 You can find the installation tree on one of the following sites.
@@ -12,9 +15,9 @@ These files can be used to install you system or to create your own installation
 
 You can download the installation tree from on of the following mirrors :
 
-- IBM POWER8 Big Endian ppc64 : [https://yum0.powerel.org/powerel8/ppc64/iso](https://yum0.powerel.org/power8/ppc64/so)
-- IBM POWER8 Little Endian ppc64le : [https://yum0.powerel.org/power8/ppc64le/iso](https://yum0.powerel.org/power8/ppc64le/so)
-- Intel AVX x86_64 : [https://yum0.powerel.org/intelavx/x86_64/iso](https://yum0.powerel.org/intelavx/x86_64/iso)
+- IBM POWER8 Big Endian ppc64 : [https://mirror0.powerel.org/powerel8/ppc64/os/](https://mirror0.powerel.org/power8/ppc64/os/)
+- IBM POWER8 Little Endian ppc64le : [https://mirror0.powerel.org/power8/ppc64le/os/](https://mirror0.powerel.org/power8/ppc64le/os/)
+- Intel AVX x86_64 : [https://mirror0.powerel.org/intelavx/x86_64/os/](https://mirror0.powerel.org/intelavx/x86_64/os/)