Fix violations of G-7460

Author: PhilippSalvisberg

docs/4-language-usage/7-stored-objects/4-functions/g-7430.md

@@ -11,7 +11,9 @@ A function should have a single point of entry as well as a single exit-point.
 
 ``` sql
 create or replace package body my_package is
-   function my_function(in_value in pls_integer) return boolean is
+   function my_function(in_value in pls_integer) return boolean
+      deterministic
+   is
       co_yes constant pls_integer := 1;
    begin
       if in_value = co_yes then
@@ -28,7 +30,9 @@ end my_package;
 
 ``` sql
 create or replace package body my_package is
-   function my_function(in_value in pls_integer) return boolean is
+   function my_function(in_value in pls_integer) return boolean
+      deterministic
+   is
       co_yes constant pls_integer := 1;
       l_ret  boolean;
    begin
@@ -48,7 +52,9 @@ end my_package;
 
 ``` sql
 create or replace package body my_package is
-   function my_function(in_value in pls_integer) return boolean is
+   function my_function(in_value in pls_integer) return boolean
+      deterministic
+   is
       co_yes constant pls_integer := 1;
    begin
       return in_value = co_yes;