Docs: minor typo
Docs: minor typo

Signed-off-by: Hu Keping <ce660952c949ad2751377b45317337be332e80ac@huawei.com>

yifan-gu/rocket,s-urbaniak/rkt,achanda/rkt,ybubnov/rkt,yifan-gu/rkt,Shashwatsh/rkt,lucasallan/rkt,yifan-gu/rkt,dgonyeo/rkt,jonboulle/rkt,alban/rkt,rkt/rkt,sstabellini/rkt,achanda/rkt,cab105/rkt,squeed/rkt,coreos/rkt,intelsdi-x/rkt,squeed/rkt,kinvolk/rkt,Wilybald/rkt,shobhit85/rkt,intelsdi-x/rkt,joshix/rkt,euank/rkt,dgonyeo/rkt,s-urbaniak/rkt,jakon89/rkt,rkt/rkt,Wilybald/rkt,coreos/rkt,joshix/rkt,yifan-gu/rocket,ybubnov/rkt,dgonyeo/rkt,yifan-gu/rocket,nhlfr/rkt,nhlfr/rkt,nhlfr/rkt,shobhit85/rkt,coreos/rkt,shobhit85/rkt,Wilybald/rkt,Shashwatsh/rkt,ybubnov/rkt,intelsdi-x/rkt,lucasallan/rkt,yifan-gu/rkt,s-urbaniak/rkt,lucasallan/rkt,joshix/rkt,euank/rkt,rkt/rkt,jonboulle/rkt,jakon89/rkt,squeed/rkt,kinvolk/rkt,euank/rkt,achanda/rkt,Shashwatsh/rkt,jonboulle/rkt,jakon89/rkt,sstabellini/rkt,lucasallan/rkt,alban/rkt,sstabellini/rkt,rkt/rkt,kinvolk/rkt,kinvolk/rkt,cab105/rkt,alban/rkt,Wilybald/rkt,joshix/rkt,cab105/rkt