Link to Getting Started Input tutorial from Input examples page (#10200)

* Link to Getting Started Input tutorial from Input examples page

---------

Co-authored-by: Hugo Locurcio <hugo.locurcio@hugo.pro>

Author: tetrapod00

getting_started/first_3d_game/02.player_input.rst

@@ -84,6 +84,8 @@ Save the scene as ``player.tscn``
 With the nodes ready, we can almost get coding. But first, we need to define
 some input actions.
 
+.. _doc_first_3d_game_input_actions:
+
 Creating input actions
 ----------------------
 

tutorials/inputs/inputevent.rst

@@ -194,10 +194,10 @@ There are several specialized types of InputEvent, described in the table below:
 |                                                                   | as feedback. (more on this below)       |
 +-------------------------------------------------------------------+-----------------------------------------+
 
-Actions
--------
+Input actions
+-------------
 
-Actions are a grouping of zero or more InputEvents into a commonly
+Input actions are a grouping of zero or more InputEvents into a commonly
 understood title (for example, the default "ui_left" action grouping both joypad-left input and a keyboard's left arrow key). They are not required to represent an
 InputEvent but are useful because they abstract various inputs when
 programming the game logic.
@@ -239,6 +239,12 @@ The Input singleton has a method for this:
     // Feedback.
     Input.ParseInputEvent(ev);
 
+
+.. seealso::
+
+   See :ref:`doc_first_3d_game_input_actions` for a tutorial on adding input
+   actions in the project settings.
+
 InputMap
 --------