docs: refactor expression in doc

CONTRIBUTING.md

@@ -129,7 +129,7 @@ To fix the issue, you need to update the Maven importing settings:
 `Build, Execution, Deployment` > `Build Tools`> `Maven` > `Importing` > `VM options for importer`
 To import Quarkus you need to define the JVM Max Heap Size (E.g. `-Xmx1g`)
 
-**Note*:* As for now, we can't provide a unique Max Heap Size value. We have been reported to require from 768M to more than 3G to import Quarkus properly.
+**Note** As for now, we can't provide a unique Max Heap Size value. We have been reported to require from 768M to more than 3G to import Quarkus properly.
 
 * Build hangs with DevMojoIT running infinitely 
 ```
@@ -139,6 +139,5 @@ To import Quarkus you need to define the JVM Max Heap Size (E.g. `-Xmx1g`)
 [INFO] Running io.quarkus.maven.it.DevMojoIT
 
 ```
-
-The DevMojoIT tests take a long time to run but too much time may not be normal. Make sure that nothing is running on 8080.
+DevMojoIT require a few minutes to run but anything more than that is not expected. Make sure that nothing is running on 8080.