Fix typo on Forms API page

Corrected moodlform to moodleform

Author: daledavies

docs/apis/subsystems/form/index.md

@@ -230,7 +230,7 @@ public function add_action_buttons(
 
 :::important
 
-The `add_action_buttons` function is defined on `moodlform` class, and not a part of `$this->_form`, for example:
+The `add_action_buttons` function is defined on the `moodleform` class, and not a part of `$this->_form`, for example:
 
 ```php
     public function definition() {

versioned_docs/version-4.1/apis/subsystems/form/index.md

@@ -228,7 +228,7 @@ public function add_action_buttons(
 
 :::important
 
-The `add_action_buttons` function is defined on `moodlform` class, and not a part of `$this->_form`, for example:
+The `add_action_buttons` function is defined on the `moodleform` class, and not a part of `$this->_form`, for example:
 
 ```php
     public function definition() {

versioned_docs/version-4.3/apis/subsystems/form/index.md

@@ -228,7 +228,7 @@ public function add_action_buttons(
 
 :::important
 
-The `add_action_buttons` function is defined on `moodlform` class, and not a part of `$this->_form`, for example:
+The `add_action_buttons` function is defined on the `moodleform` class, and not a part of `$this->_form`, for example:
 
 ```php
     public function definition() {

versioned_docs/version-4.4/apis/subsystems/form/index.md

@@ -230,7 +230,7 @@ public function add_action_buttons(
 
 :::important
 
-The `add_action_buttons` function is defined on `moodlform` class, and not a part of `$this->_form`, for example:
+The `add_action_buttons` function is defined on the `moodleform` class, and not a part of `$this->_form`, for example:
 
 ```php
     public function definition() {

versioned_docs/version-4.5/apis/subsystems/form/index.md

@@ -230,7 +230,7 @@ public function add_action_buttons(
 
 :::important
 
-The `add_action_buttons` function is defined on `moodlform` class, and not a part of `$this->_form`, for example:
+The `add_action_buttons` function is defined on the `moodleform` class, and not a part of `$this->_form`, for example:
 
 ```php
     public function definition() {