Apply suggestions from code review

Co-authored-by: Andrew Kenworthy <1712947+adwk67@users.noreply.github.com>
Co-authored-by: Malte Sander <malte.sander.it@gmail.com>

Author: 3 people

modules/concepts/pages/overrides.adoc

@@ -155,20 +155,20 @@ They will *not* be applied to:
 == JVM argument overrides
 
 You can configure the JVM arguments used by JVM based tools.
-This is often times needed to e.g. configure a HTTP proxy or other network settings.
+This is often needed to e.g. configure a HTTP proxy or other network settings.
 
-As with other overrides, the operator generates a set of JVM arguments that are needed to run the tool, you can specify additional arguments, which are merged on top of the ones the operator generated.
-As some JVm arguments are mutually exclusive (think of `-Xmx123m` and `-Xmx456m`), you also have the option to remove JVM arguments - either by specifying the exact argument or a regex.
+As with other overrides, the operator generates a set of JVM arguments that are needed to run the tool. You can specify additional arguments which are merged on top of the ones the operator generated.
+As some JVM arguments are mutually exclusive (think of `-Xmx123m` and `-Xmx456m`), you also have the option to remove JVM arguments - either by specifying the exact argument or a regex.
 
-The merging mechanism is applied <operator-generated> <- <role user specified> <- <rolegroup user specified> and works as following:
+The merging mechanism is applied <operator-generated> <- <role user specified> <- <rolegroup user specified> and works as follows:
 
 Let user be the user-specified arguments and operator be the arguments generated by the operator.
 
 1. All arguments listed in user `remove` are removed from operator
 2. All arguments matching any regex from user `removeRegex` are removed from operator
 3. All arguments from user `add` are added to operator
 
-You can check the resulting effective JVM arguments by looking at the ConfigMap containing the config for the roleGroup (although some tools read the JVM arguments from environmental variable).
+You can check the resulting effective JVM arguments by looking at the ConfigMap containing the config for the roleGroup (although some tools read the JVM arguments from environmental variables).
 
 === Simple example