fixup typo in metric name from kubelet (DataDog#24018)

The new metric added in the agent is named `limits` with an s.
same goes for requests.

Signed-off-by: Alexandre Lavigne <alexandre.lavigne@datadoghq.com>

Author: lavigne958

kubelet/metadata.csv

@@ -15,8 +15,8 @@ kubernetes.cpu.cfs.throttled.seconds,gauge,,,,Total time duration the container
 kubernetes.cpu.capacity,gauge,,core,,The number of cores in this machine (available until kubernetes v1.18),0,kubernetes,k8s.cpu.capacity,
 kubernetes.cpu.usage.total,gauge,,nanocore,,The number of cores used,-1,kubernetes,k8s.cpu,
 kubernetes.cpu.limits,gauge,,core,,The limit of cpu cores set,0,kubernetes,k8s.cpu.limits,
-kubernetes.pod.cpu.request,gauge,,core,,The pod-level requested CPU cores,0,kubernetes,k8s.pod.cpu.request,
-kubernetes.pod.cpu.limit,gauge,,core,,The pod-level CPU core limit,0,kubernetes,k8s.pod.cpu.limit,
+kubernetes.pod.cpu.requests,gauge,,core,,The pod-level requested CPU cores,0,kubernetes,k8s.pod.cpu.request,
+kubernetes.pod.cpu.limits,gauge,,core,,The pod-level CPU core limit,0,kubernetes,k8s.pod.cpu.limit,
 kubernetes.cpu.requests,gauge,,core,,The requested cpu cores,0,kubernetes,k8s.cpu.requests,
 kubernetes.filesystem.usage,gauge,,byte,,The amount of disk used,-1,kubernetes,k8s.disk.usage,
 kubernetes.filesystem.usage_pct,gauge,,fraction,,The percentage of disk used,-1,kubernetes,k8s.disk.used_pct,
@@ -26,8 +26,8 @@ kubernetes.memory.capacity,gauge,,byte,,The amount of memory (in bytes) in this
 kubernetes.memory.limits,gauge,,byte,,The limit of memory set,0,kubernetes,k8s.mem.limits,
 kubernetes.memory.sw_limit,gauge,,byte,,The limit of swap space set,0,kubernetes,k8s.mem.sw_limit,
 kubernetes.memory.requests,gauge,,byte,,The requested memory,0,kubernetes,k8s.mem.requests,
-kubernetes.pod.memory.request,gauge,,byte,,The pod-level requested memory in bytes,0,kubernetes,k8s.pod.mem.request,
-kubernetes.pod.memory.limit,gauge,,byte,,The pod-level memory limit in bytes,0,kubernetes,k8s.pod.mem.limit,
+kubernetes.pod.memory.requests,gauge,,byte,,The pod-level requested memory in bytes,0,kubernetes,k8s.pod.mem.request,
+kubernetes.pod.memory.limits,gauge,,byte,,The pod-level memory limit in bytes,0,kubernetes,k8s.pod.mem.limit,
 kubernetes.memory.usage,gauge,,byte,,Current memory usage in bytes including all memory regardless of when it was accessed,-1,kubernetes,k8s.mem,
 kubernetes.memory.working_set,gauge,,byte,,Current working set in bytes - this is what the OOM killer is watching for,-1,kubernetes,k8s.mem.ws,
 kubernetes.memory.cache,gauge,,byte,,The amount of memory that is being used to cache data from disk (e.g. memory contents that can be associated precisely with a block on a block device),-1,kubernetes,k8s.mem.cache,