YARN-11563. Fix typo in AbstractContainerAllocator from CSAssignemnt to CSAssignment (#6026). Contributed by wangzhongwei.

Signed-off-by: Ayush Saxena <ayushsaxena@apache.org>

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/allocator/AbstractContainerAllocator.java

@@ -181,7 +181,7 @@ public abstract class AbstractContainerAllocator {
    * @param schedulingMode scheduling mode (exclusive or nonexclusive)
    * @param resourceLimits resourceLimits
    * @param reservedContainer reservedContainer
-   * @return CSAssignemnt proposal
+   * @return CSAssignment proposal
    */
   public abstract CSAssignment assignContainers(Resource clusterResource,
       CandidateNodeSet<FiCaSchedulerNode> candidates,