YARN-6026. A couple of spelling errors in the docs. Contributed by Grant Sohn.

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/ResourceManagerRest.md

@@ -2286,7 +2286,7 @@ The *maximum-resource-capabilites* object contains the following elements:
 
 | Item | Data Type | Description |
 |:---- |:---- |:---- |
-| memory | int | The maxiumim memory available for a container |
+| memory | int | The maximum memory available for a container |
 | vCores | int | The maximum number of cores available for a container |
 
 ### Response Examples

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/TimelineServiceV2.md

@@ -334,7 +334,7 @@ After creating the timeline client, user also needs to set the timeline collecto
 
     amRMClient.registerTimelineClient(timelineClient);
 
-Else address needs to be retreived from the AM allocate response and need to be set in timeline client explicitly.
+Else address needs to be retrieved from the AM allocate response and need to be set in timeline client explicitly.
 
     timelineClient.setTimelineServiceAddress(response.getCollectorAddr());