Fix formatting in README

Author: caetera

README.md

@@ -193,7 +193,7 @@ Provide one of the following filters:
  * sequence and tolerance (tolerance unit optional, defaults to `ppm`)
 
 optionally one can define starting and ending retention times, provide filter string (defaults to `ms`, i.e. only MS1 scans), and a comment (free text) field; any valid filter string is supported,
-however only basic validation is performed, see #158 for details. Comment can contain any text and will be preserved in the output.
+however only basic validation is performed, see [issue #158](https://github.com/compomics/ThermoRawFileParser/issues/158) for details. Comment can contain any text and will be preserved in the output.
 
 An example input JSON file:
 
@@ -221,15 +221,15 @@ An example input JSON file:
             "sequence":"TRANNEL",
             "tolerance":10
         },
-		{
+        {
             "mz":1014.5099732499732,
             "rt_start":14.0600881872,
             "rt_end":14.4167198290667,
             "tolerance":5,
             "tolerance_unit":"ppm",
             "comment":"Only ion trap scans"
             "scan_filter":"ITMS"
-		}
+        }
    }
 ]