Reword merge mechanism

Author: sbernauer

modules/concepts/pages/overrides.adoc

@@ -160,13 +160,11 @@ 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.
 
-The merging mechanism is applied <operator-generated> <- <role user specified> <- <rolegroup user specified> and works as follows:
+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
+1. All arguments listed in user specified `remove` are removed from operator generated
+2. All arguments matching any regex from user `removeRegex` are removed from operator generated
+3. All arguments from user specified `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 variables).