Update README.md

Fix typo

Author: feodor

README.md

@@ -5,25 +5,29 @@ Functions:
 setof (name text, level integer, nblocks bigint, freechunks bigint,
 	   totalspace bigint, freespace bigint)
 	local_memory_stats()
-	prints memory context's statistic for current backend
+	
+prints memory context's statistic for current backend
 
 setof (pid integer, name text, level integer, nblocks bigint, freechunks bigint,
 	   totalspace bigint, freespace bigint)
-	instance_memory_stats()
-	prints memory context's statistic for all alive backend, works if library
-	was preloaded via shared_preload_libraries.
+           instance_memory_stats()
+           
+prints memory context's statistic for all alive backend, works if library
+was preloaded via shared_preload_libraries.
 
 view memory_stats
-	prints per backend summary memory statistics 	
+
+prints per backend summary memory statistics 	
 
 To use instance_memory_stats() it's needed to add memstat library to
 shared_preload_libraries. And it should be last in that list!
 
 GUC variable:
-	memstat.period = 10 # seconds
 
-	Module collects memory statistics at a begining of each query and
-	it could be expensive on highloaded instances, so, this variable
-	set minimal time between statistic obtaining.
+memstat.period = 10 # seconds
+
+Module collects memory statistics at a begining of each query and
+it could be expensive on highloaded instances, so, this variable
+set minimal time between statistic obtaining.
 
 Copyright (c) 2016, Teodor Sigaev <[email protected]>