change header size

README.md

@@ -17,13 +17,13 @@ flowchart LR
     class A,B,C,D,E format
 ```
 
-##### Fluent Bit Input
+#### Fluent Bit Input
 Fluent Bit can collect application logs from >40 different [sources][2]. Common sources include tailing
 log files and other Fluent Bit instances.
-##### CLP Output Plugin
+#### CLP Output Plugin
 Output plugin recieves logs from Fluent Bit and parses them into [CLP IR][1]. CLP IR consists of a timestamp, a list of variable values, and the
 log type. IR is then compressed with [Zstd][3] in default mode without dictionaries.
-##### Output
+#### Output
 Compressed IR output is sent to plugin output (currently only AWS S3 is supported). CLP can directly ingest compressed IR output and convert into archives for efficient storage and search.
 
 ### Usage