Merge pull request #17537 from rauldsl/prometheus-docs

[Doc] Storage.md - Paragraph Rewrite

docs/storage.md

@@ -11,13 +11,13 @@ Prometheus's local time series database stores data in a custom, highly efficien
 
 ### On-disk layout
 
-Ingested samples are grouped into blocks of two hours. Each two-hour block consists
-of a directory containing a chunks subdirectory containing all the time series samples
-for that window of time, a metadata file, and an index file (which indexes metric names
-and labels to time series in the chunks directory). The samples in the chunks directory
-are grouped together into one or more segment files of up to 512MB each by default. When
-series are deleted via the API, deletion records are stored in separate tombstone files
-(instead of deleting the data immediately from the chunk segments).
+Ingested samples are grouped into two-hour blocks. Each block consists of a directory that 
+contains a chunks subdirectory with all the time series samples for that time window, 
+a metadata file,  and an index file (which maps metric names and labels to the time series 
+in the chunks directory). The samples in the chunks directory are organized into one 
+or more segment files, each up to 512 MB by default. When series are deleted via the API, 
+the deletion records are stored in separate tombstone files rather than being immediately 
+removed from the chunk segments.
 
 The current block for incoming samples is kept in memory and is not fully
 persisted. It is secured against crashes by a write-ahead log (WAL) that can be