Fix all possible HTTP to HTTPS docs links (#25153)

docs/en/sim_gazebo_classic/index.md

@@ -46,8 +46,6 @@ Note that `aptitude` is needed because it can resolve dependency conflicts (by r
 
 ::: tip
 You could also modify the installation script to install Gazebo Classic on Ubuntu 22.04 before it is run for the first time.
-
-Additional installation instructions can be found on [gazebosim.org](http://gazebosim.org/tutorials?cat=guided_b&tut=guided_b1).
 :::
 
 ## Running the Simulation
@@ -120,7 +118,7 @@ INFO  [simulator] Waiting for simulator to connect on TCP port 4560
 Gazebo multi-robot simulator, version 9.0.0
 Copyright (C) 2012 Open Source Robotics Foundation.
 Released under the Apache 2 License.
-http://gazebosim.org
+https://gazebosim.org/home
 ...
 INFO  [ecl/EKF] 5188000: commencing GPS fusion
 ```

docs/en/sim_gazebo_classic/multi_vehicle_simulation.md

@@ -102,7 +102,7 @@ You can then control the vehicles with _QGroundControl_ and MAVROS in a similar
 
 ### Required
 
-- Current [PX4 ROS/Gazebo development environment](../ros/mavros_installation.md) (which includes the [MAVROS package](http://wiki.ros.org/mavros)).
+- Current [PX4 ROS/Gazebo development environment](../ros/mavros_installation.md) (which includes the [MAVROS package](https://wiki.ros.org/mavros)).
 - a clone of latest [PX4/PX4-Autopilot](https://github.com/PX4/PX4-Autopilot)
 
 ### Build and Test
@@ -182,7 +182,6 @@ The launch file `multi_uav_mavros_sitl.launch`does the following,
   ```
 
 - for each vehicle,
-
   - creates urdf model from xacro, loads gazebo classic model and runs PX4 SITL app instance
 
     ```xml
@@ -225,7 +224,6 @@ To add a third iris to this simulation there are two main components to consider
   - select a different port for `mavlink_udp_port` arg for communication with Gazebo Classic
   - selects ports for MAVROS communication by modifying both port numbers in the `fcu_url` arg
 - create a startup file, and change the file as follows:
-
   - make a copy of an existing iris rcS startup file (`iris_1` or `iris_2`) and rename it `iris_3`
   - `MAV_SYS_ID` value to `3`
   - `SITL_UDP_PRT` value to match that of the `mavlink_udp_port` launch file arg
@@ -264,7 +262,6 @@ This method is similar to using the xacro except that the SITL/Gazebo Classic po
 To add a new vehicle, you need to make sure the model can be found (in order to spawn it in Gazebo Classic), and PX4 needs to have an appropriate corresponding startup script.
 
 1. You can choose to do either of:
-
    - modify the **single_vehicle_spawn_sdf.launch** file to point to the location of your model by changing the line below to point to your model:
 
      ```sh
@@ -286,5 +283,5 @@ To add a new vehicle, you need to make sure the model can be found (in order to
 ## Additional Resources
 
 - See [Simulation](../simulation/index.md) for a description of the UDP port configuration.
-- See [URDF in Gazebo](http://wiki.ros.org/urdf/Tutorials/Using%20a%20URDF%20in%20Gazebo) for more information about spawning the model with xacro.
+- See [URDF in Gazebo](https://wiki.ros.org/urdf/Tutorials/Using%20a%20URDF%20in%20Gazebo) for more information about spawning the model with xacro.
 - See [RotorS](https://github.com/ethz-asl/rotors_simulator/tree/master/rotors_description/urdf) for more xacro models.

docs/en/sim_gazebo_classic/octomap.md

@@ -1,6 +1,6 @@
 # OctoMap 3D Models with ROS/Gazebo Classic
 
-The [OctoMap library](http://octomap.github.io/) is an open source library for generating volumetric 3D environment models from sensor data.
+The [OctoMap library](https://octomap.github.io/) is an open source library for generating volumetric 3D environment models from sensor data.
 This model data can then be used by a drone for navigation and obstacle avoidance.
 
 This guide covers how to use _OctoMap_ with the [Gazebo Classic](../sim_gazebo_classic/index.md) [Rotors Simulator](https://github.com/ethz-asl/rotors_simulator/wiki/RotorS-Simulator) and ROS.