MDL-31689 fix moodle_database:execute() description

lib/dml/moodle_database.php

@@ -956,7 +956,7 @@ abstract class moodle_database {
 
     /**
      * Executes a general sql query. Should be used only when no other method suitable.
-     * Do NOT use this to make changes in db structure, use database_manager::execute_sql() instead!
+     * Do NOT use this to make changes in db structure, use database_manager methods instead!
      * @param string $sql query
      * @param array $params query parameters
      * @return bool true

lib/dml/mssql_native_moodle_database.php

@@ -655,7 +655,7 @@ class mssql_native_moodle_database extends moodle_database {
 
     /**
      * Execute general sql query. Should be used only when no other method suitable.
-     * Do NOT use this to make changes in db structure, use database_manager::execute_sql() instead!
+     * Do NOT use this to make changes in db structure, use database_manager methods instead!
      * @param string $sql query
      * @param array $params query parameters
      * @return bool true

lib/dml/mysqli_native_moodle_database.php

@@ -708,7 +708,7 @@ class mysqli_native_moodle_database extends moodle_database {
 
     /**
      * Execute general sql query. Should be used only when no other method suitable.
-     * Do NOT use this to make changes in db structure, use database_manager::execute_sql() instead!
+     * Do NOT use this to make changes in db structure, use database_manager methods instead!
      * @param string $sql query
      * @param array $params query parameters
      * @return bool true

lib/dml/oci_native_moodle_database.php

@@ -990,7 +990,7 @@ class oci_native_moodle_database extends moodle_database {
 
     /**
      * Execute general sql query. Should be used only when no other method suitable.
-     * Do NOT use this to make changes in db structure, use database_manager::execute_sql() instead!
+     * Do NOT use this to make changes in db structure, use database_manager methods instead!
      * @param string $sql query
      * @param array $params query parameters
      * @return bool true

lib/dml/pdo_moodle_database.php

@@ -226,7 +226,7 @@ abstract class pdo_moodle_database extends moodle_database {
 
     /**
      * Execute general sql query. Should be used only when no other method suitable.
-     * Do NOT use this to make changes in db structure, use database_manager::execute_sql() instead!
+     * Do NOT use this to make changes in db structure, use database_manager methods instead!
      * @param string $sql query
      * @param array $params query parameters
      * @return bool success

lib/dml/pgsql_native_moodle_database.php

@@ -585,7 +585,7 @@ class pgsql_native_moodle_database extends moodle_database {
 
     /**
      * Execute general sql query. Should be used only when no other method suitable.
-     * Do NOT use this to make changes in db structure, use database_manager::execute_sql() instead!
+     * Do NOT use this to make changes in db structure, use database_manager methods instead!
      * @param string $sql query
      * @param array $params query parameters
      * @return bool true

lib/dml/sqlsrv_native_moodle_database.php

@@ -731,7 +731,7 @@ class sqlsrv_native_moodle_database extends moodle_database {
 
     /**
      * Execute general sql query. Should be used only when no other method suitable.
-     * Do NOT use this to make changes in db structure, use database_manager::execute_sql() instead!
+     * Do NOT use this to make changes in db structure, use database_manager methods instead!
      * @param string $sql query
      * @param array $params query parameters
      * @return bool true