refresh maillist and homepage for A-Tune and kernel SIG

content/en/sig/atune.md → content/en/sig/A-Tune.md

 +++
-name="atune"
-mailList="dev@openeuler.org"
-ircChannel="#openeuler-dev"
+name="A-Tune"
+mailList="a-tune@openeuler.org"
+ircChannel="#openeuler-a-tune"
 maintainers="xiezhipeng1"
-homepage="https://gitee.com/openeuler/community/tree/master/sig/atune"
+homepage="https://gitee.com/openeuler/community/tree/master/sig/A-Tune"
 +++

content/en/sig/Kernel.md

 +++
 name="Kernel"
-mailList="dev@openeuler.org"
+mailList="kernel@openeuler.org"
 ircChannel="#openeuler-dev"
 maintainers="openeuler_kernel"
 homepage="https://gitee.com/openeuler/community/tree/master/sig/Kernel"

content/zh/sig/atune.md → content/zh/sig/A-Tune.md

 +++
-name="atune"
-mailList="dev@openeuler.org"
-ircChannel="#openeuler-dev"
+name="A-Tune"
+mailList="a-tune@openeuler.org"
+ircChannel="#openeuler-a-tune"
 maintainers="xiezhipeng1"
-homepage="https://gitee.com/openeuler/community/tree/master/sig/atune"
+homepage="https://gitee.com/openeuler/community/tree/master/sig/A-Tune"
 +++

content/zh/sig/Kernel.md

 +++
 name="Kernel"
-mailList="dev@openeuler.org"
+mailList="kernel@openeuler.org"
 ircChannel="#openeuler-dev"
 maintainers="openeuler_kernel"
 homepage="https://gitee.com/openeuler/community/tree/master/sig/Kernel"