fix readme and email of maintainers

Signed-off-by: Augustin Husson <[email protected]>

Co-authored-by: Julius Volz <[email protected]>

MAINTAINERS.md

@@ -1,2 +1,2 @@
 * Augustin Husson <[email protected]> [@nexucis](https://github.com/Nexucis)
-* Julius Volz <julius.volz@gmail.com> [@juliusv](https://github.com/juliusv)
+* Julius Volz <julius.volz@promlabs.com> [@juliusv](https://github.com/juliusv)

README.md

@@ -4,19 +4,19 @@
 
 ## Overview
 
-This is a PromQL grammar for the [lezer](https://lezer.codemirror.net/) parser system. It is inspired from the initial
+This is a PromQL grammar for the [lezer](https://lezer.codemirror.net/) parser system. It is inspired by the initial
 grammar coming from [Prometheus](https://github.com/prometheus/prometheus/blob/master/promql/parser/generated_parser.y)
 written in yacc.
 
 This library is stable but doesn't provide any guideline of how to use it as it has been integrated
 into [codemirror-promql](https://github.com/prometheus-community/codemirror-promql). If you want to use this library,
-you perhaps want to use actually **codemirror-promql** instead.
+you perhaps want to actually use **codemirror-promql** instead.
 
-**Note**: This library is following the as closed as possible the changes of the vanilla grammar (i.e. coming from Prometheus)
+**Note**: This library is following the changes of the upstream grammar (i.e. coming from Prometheus) as closed as possible
 
 ## Installation
 
-This package is available as a npm package:
+This package is available as an npm package:
 
 ```bash
 npm install --save lezer-promql
@@ -28,9 +28,6 @@ npm install --save lezer-promql
 npm install --save lezer
 ```
 
-**Note 2**: In case you are using at the same time [Codemirror.next](https://codemirror.net/6/), you won't have to
-install the deps **lezer** since it's already a dependency of Codemirror.next.
-
 ## Development
 
 ### Building