doc: fix image paths

Use full path just like all other images in the api docs

doc/api/hubs/index.rst

@@ -17,42 +17,42 @@
 .. class:: MoveHub
     :noindex:
 
-.. figure:: ../images/movehub.png
+.. figure:: ../../api/images/movehub.png
     :height: 10 em
     :target: movehub.html
 
 .. class:: CityHub
     :noindex:
 
-.. figure:: ../images/cityhub.png
+.. figure:: ../../api/images/cityhub.png
     :height: 10 em
     :target: cityhub.html
 
 .. class:: TechnicHub
     :noindex:
 
-.. figure:: ../images/technichub.png
+.. figure:: ../../api/images/technichub.png
     :height: 10 em
     :target: technichub.html
 
 .. class:: PrimeHub
     :noindex:
 
-.. figure:: ../images/primehub.png
+.. figure:: ../../api/images/primehub.png
     :height: 10 em
     :target: primehub.html
 
 .. class:: InventorHub
     :noindex:
 
-.. figure:: ../images/inventorhub.png
+.. figure:: ../../api/images/inventorhub.png
     :height: 10 em
     :target: inventorhub.html
 
 .. class:: EV3Brick
     :noindex:
 
-.. figure:: ../images/ev3brick.png
+.. figure:: ../../api/images/ev3brick.png
     :height: 10 em
     :target: ev3brick.html
 

doc/api/index.rst

@@ -17,13 +17,13 @@ the platforms below.
      - **Powered Up (Technic/City/BOOST)**
      - **SPIKE / MINDSTORMS Inventor**
 
-   * - .. image:: images/ev3brick.png
+   * - .. image:: ../api/images/ev3brick.png
          :target: start_ev3/index.html
 
-     - .. figure:: images/powereduphubs.png
+     - .. figure:: ../api/images/powereduphubs.png
          :target: start_pup.html
 
-     - .. figure:: images/primeinventorhub.png
+     - .. figure:: ../api/images/primeinventorhub.png
           :target: start_inventor.html
 
 

doc/api/pupdevices/index.rst

@@ -23,14 +23,14 @@
 .. class:: DCMotor
     :noindex:
 
-.. figure:: ../images/pupdcmotors_label.png
+.. figure:: ../../api/images/pupdcmotors_label.png
     :width: 70 %
     :target: dcmotor.html
 
 .. class:: Motor
     :noindex:
 
-.. figure:: ../images/pupmotors_label.png
+.. figure:: ../../api/images/pupmotors_label.png
     :width: 100 %
     :target: motor.html
 

doc/api/start_pup.rst

@@ -1,7 +1,7 @@
 Powered Up Quick Start
 ########################
 
-.. figure:: images/powereduphubs.png
+.. figure:: ../api/images/powereduphubs.png
     :height: 15 em
     :align: center