[DROOLS-7616][DROOLS-7617] minor documentation fixes (apache#5809)

drools-docs/src/modules/ROOT/pages/language-reference-traditional/_drl-declarations-enumerative-con.adoc

@@ -16,7 +16,7 @@ end
 
 rule "Using a declared Enum"
 when
-   $emp : Employee( dayOff == DaysOfWeek.MONDAY )
+   $emp : Employee( dayOff == DaysOfWeek.MON )
 then
    ...
 end

drools-docs/src/modules/ROOT/pages/language-reference/_drl-rules.adoc

@@ -379,7 +379,7 @@ end
 
 rule "Using a declared Enum"
   when
-    $emp : /employees[ dayOff == DaysOfWeek.MONDAY ]
+    $emp : /employees[ dayOff == DaysOfWeek.MON ]
   then
     ...
 end

drools-docs/src/modules/ROOT/pages/rule-engine/_execution-control-con.adoc

@@ -87,7 +87,7 @@ then
 end
 ----
 
-For this example, the rules in the `"report"` agenda group must always be executed first and the rules in the `"calculation"` agenda group must always be executed second. Any remaining rules in other agenda groups can then be executed. Therefore, the `"report"` and `"calculation"` groups must receive the focus to be executed in that order, before other rules can be executed:
+For this example, the rules in the `"calculation"` agenda group must always be executed first and the rules in the `"report"` agenda group must always be executed second. Any remaining rules in other agenda groups can then be executed. Therefore, the `"report"` and `"calculation"` groups must receive the focus to be executed in reverse order (due to the fact that the agenda groups are placed on a stack), before other rules can be executed:
 
 .Set the focus for the order of agenda group execution
 [source,java]