fix logstash metrics descriptions (#2570)

Author: schew2381

logstash/metadata.csv

@@ -16,8 +16,8 @@ logstash.jvm.mem.heap_max_in_bytes,gauge,,byte,,Maximum Java heap memory size.,0
 logstash.jvm.mem.heap_used_in_bytes,gauge,,byte,,Total Java heap memory used.,0,logstash,jvm mem heap used in bytes,
 logstash.jvm.mem.non_heap_used_in_bytes,gauge,,byte,,Total Java non-heap memory used.,0,logstash,jvm mem non heap used in bytes,
 logstash.jvm.mem.non_heap_committed_in_bytes,gauge,,byte,,Total Java non-heap memory committed.,0,logstash,jvm mem non heap committed in bytes,
-logstash.jvm.mem.pools.survivor.peak_used_in_bytes,gauge,,byte,,The Java memory used in the Survivor space.,0,logstash,jvm mem pools survivor peak used in bytes,
-logstash.jvm.mem.pools.survivor.used_in_bytes,gauge,,byte,,The peak Java memory used in the Survivor space.,0,logstash,jvm mem pools survivor used in bytes,
+logstash.jvm.mem.pools.survivor.peak_used_in_bytes,gauge,,byte,,The peak Java memory used in the Survivor space.,0,logstash,jvm mem pools survivor peak used in bytes,
+logstash.jvm.mem.pools.survivor.used_in_bytes,gauge,,byte,,The Java memory used in the Survivor space.,0,logstash,jvm mem pools survivor used in bytes,
 logstash.jvm.mem.pools.survivor.peak_max_in_bytes,gauge,,byte,,The peak maximum Java memory used in the Survivor space.,0,logstash,jvm mem pools survivor peak max in bytes,
 logstash.jvm.mem.pools.survivor.max_in_bytes,gauge,,byte,,The maximum Java memory used in the Survivor space.,0,logstash,jvm mem pools survivor max in bytes,
 logstash.jvm.mem.pools.survivor.committed_in_bytes,gauge,,byte,,The committed Java memory used in the Survivor space.,0,logstash,jvm mem pools survivor committed in bytes,
@@ -34,7 +34,7 @@ logstash.jvm.mem.pools.young.committed_in_bytes,gauge,,byte,,The committed Java
 logstash.jvm.gc.collectors.old.collection_time_in_millis,gauge,,millisecond,,Garbage collection time spent in the Old generation.,0,logstash,jvm gc collectors old collection time in millis,
 logstash.jvm.gc.collectors.old.collection_count,gauge,,,,Garbage collection count in the Old generation.,0,logstash,jvm gc collectors old collection count,
 logstash.jvm.gc.collectors.young.collection_time_in_millis,gauge,,millisecond,,Garbage collection time spent in the Young generation.,-1,logstash,jvm gc collectors young collection time in millis,
-logstash.jvm.gc.collectors.young.collection_count,gauge,,,,Garbage collection time spent in the Young generation.,-1,logstash,jvm gc collectors young collection count,
+logstash.jvm.gc.collectors.young.collection_count,gauge,,,,Garbage collection count in the Young generation.,-1,logstash,jvm gc collectors young collection count,
 logstash.reloads.successes,gauge,,,,Number of successful configuration reloads.,1,logstash,reloads successes,
 logstash.reloads.failures,gauge,,,,Number of failed configuration reloads.,-1,logstash,reloads failures,
 logstash.pipeline.dead_letter_queue.queue_size_in_bytes,gauge,,byte,,Total size of the dead letter queue.,0,logstash,dead letter queue queue size in bytes,