Fix wrong characteristic in G-3183 and generate appendix

Author: PhilippSalvisberg

docs/4-language-usage/3-dml-and-sql/1-general/g-3183.md

@@ -1,7 +1,7 @@
 # G-3183: Always specify column aliases instead of expressions in GROUP BY clauses.
 
 !!! tip "Minor"
-    Readability, Maintainability
+    Maintainability
 
 ## Restriction
 

docs/9-appendix/appendix.md

@@ -54,6 +54,8 @@ n/a | 3150 | Try to use identity columns for surrogate keys. | Critical |  |  |
 n/a | 3160 | Avoid visible virtual columns. | Major |  |  | ✘ |  | ✘ |  |  | 
 n/a | 3170 | Always use DEFAULT ON NULL declarations to assign default values to table columns if you refuse to store NULL values. | Major |  |  |  |  | ✘ |  |  | 
 n/a | 3180 | Always specify column names instead of positional references in ORDER BY clauses. | Major | ✘ |  |  |  | ✘ |  |  | 
+n/a | 3182 | Always specify column names instead of positional references in GROUP BY clauses. | Blocker |  |  |  |  | ✘ |  |  | 
+n/a | 3183 | Always specify column aliases instead of expressions in GROUP BY clauses. | Minor |  |  | ✘ |  |  |  |  | 
 n/a | 3185 | Never use ROWNUM at the same query level as ORDER BY. | Blocker |  |  |  |  | ✘ |  |  | ✘
 n/a | 3190 | Avoid using NATURAL JOIN. | Blocker | ✘ |  |  |  | ✘ |  |  | 
 n/a | 3195 | Always use wildcards in a LIKE clause. | Blocker |  |  | ✘ |  |  |  |  |