docs: fix PHPDocs related to Model::insert()

Author: kenjis

system/BaseModel.php

@@ -353,11 +353,11 @@ abstract protected function doFirst();
 
     /**
      * Inserts data into the current database
-     * This methods works only with dbCalls
+     * This method works only with dbCalls
      *
      * @param array $data Data
      *
-     * @return bool|int|string
+     * @return bool
      */
     abstract protected function doInsert(array $data);
 
@@ -695,7 +695,7 @@ public function getInsertID()
      *
      * @throws ReflectionException
      *
-     * @return bool|int|string
+     * @return bool|int|string insert ID or true on success. false on failure.
      */
     public function insert($data = null, bool $returnID = true)
     {

system/Database/BaseBuilder.php

@@ -1887,7 +1887,7 @@ public function getCompiledInsert(bool $reset = true)
      *
      * @throws DatabaseException
      *
-     * @return bool|Query
+     * @return bool
      */
     public function insert($set = null, ?bool $escape = null)
     {

system/Model.php

@@ -251,11 +251,11 @@ protected function doFirst()
 
     /**
      * Inserts data into the current table.
-     * This methods works only with dbCalls
+     * This method works only with dbCalls
      *
      * @param array $data Data
      *
-     * @return bool|Query
+     * @return bool
      */
     protected function doInsert(array $data)
     {