fixes #116 - syntax error in good and bad example of G-9020/9030 and table name in G-9010/9020/9030

Author: PhilippSalvisberg

docs/4-language-usage/9-function-usage/g-9010.md

@@ -15,7 +15,7 @@ Using an explicit format model for string to `date` or `timestamp` conversion av
 create package body employee_api is
    procedure set_dob (in_employee_id in employees.employee_id%type, in_dob_str in varchar2) is
    begin
-      update employee
+      update employees
       set date_of_birth = to_date(in_dob_str)
       where employee_id = in_employee_id;
    end set_dob;
@@ -29,7 +29,7 @@ end employee_api;
 create package body employee_api is
    procedure set_dob (in_employee_id in employees.employee_id%type, in_dob_str in varchar2) is
    begin
-      update employee
+      update employees
       set date_of_birth = to_date(in_dob_str, 'YYYY-MM-DD')
       where employee_id = in_employee_id;
    end set_dob;

docs/4-language-usage/9-function-usage/g-9020.md

@@ -13,9 +13,9 @@ To avoid an inappropriate dependability on configurable NLS parameters, try to u
 
 ``` sql
 create package body employee_api is
-   procedure set_salary (in_employee_id in employees.employee_id%type, in_salary in varchar2)
+   procedure set_salary (in_employee_id in employees.employee_id%type, in_salary in varchar2) is
    begin
-      update employee
+      update employees
       set salary = to_number(in_salary)
       where employee_id = in_employee_id;
    end set_dob;
@@ -27,9 +27,9 @@ end employee_api;
 
 ``` sql
 create package body employee_api is
-   procedure set_salary (in_employee_id in employees.employee_id%type, in_salary in varchar2)
+   procedure set_salary (in_employee_id in employees.employee_id%type, in_salary in varchar2) is
    begin
-      update employee
+      update employees
       set salary = to_number(in_salary, '99999999999999999999.99999', q'[nls_numeric_characters='.,']')
       where employee_id = in_employee_id;
    end set_dob;

docs/4-language-usage/9-function-usage/g-9030.md

@@ -11,9 +11,9 @@ When converting from strings to other datatypes using a conversion function that
 
 ``` sql
 create package body employee_api is
-   procedure set_dob (in_employee_id in employees.employee_id%type, in_dob_str in varchar2)
+   procedure set_dob (in_employee_id in employees.employee_id%type, in_dob_str in varchar2) is
    begin
-      update employee
+      update employees
       set date_of_birth = to_date(in_dob_str, 'YYYY-MM-DD')
       where employee_id = in_employee_id;
    end set_dob;
@@ -25,9 +25,9 @@ end employee_api;
 
 ``` sql
 create package body employee_api is
-   procedure set_dob (in_employee_id in employees.employee_id%type, in_dob_str in varchar2)
+   procedure set_dob (in_employee_id in employees.employee_id%type, in_dob_str in varchar2) is
    begin
-      update employee
+      update employees
       set date_of_birth = to_date(in_dob_str default null on conversion error, 'YYYY-MM-DD')
       where employee_id = in_employee_id;
    end set_dob;