User guide: synchronise RBC_Est.mod with the text

(cherry picked from commit 79284070)

doc/userguide/ch-estbase.tex

@@ -166,10 +166,10 @@ varobs y;\\
 \\
 initval;\\
   k = 9;\\
-  c = 0.7;\\
+  c = 0.76;\\
   l = 0.3;\\
-  w = 2.0;\\
-  r = 0;\\
+  w = 2.07;\\
+  r = 0.03;\\
   z = 0; \\
   e = 0;\\
 end;\\