DOC: Fix docs References and Examples Build.

Author: phmbressan

docs/reference/classes/sensors/index.rst

@@ -9,4 +9,4 @@ Sensor Classes
    Accelerometer Class <accelerometer>
    Barometer Class <barometer>
    Gyroscope Class <gyroscope>
-   GNSS Receiver Class <gnss>
+   GNSS Receiver Class <gnss_receiver>

docs/user/environment/0-setup/elevation.rst

@@ -35,7 +35,7 @@ It is integrated with RocketPy and can be used as follows.
 
 First, initialize a new Environment:
 
-.. jupyter-execute::
+.. code-block:: python
 
     env = Environment(
         date=(2019, 2, 10, 18),
@@ -45,13 +45,13 @@ First, initialize a new Environment:
 
 Then, set the elevation using Open-Elevation:
 
-.. jupyter-execute::
+.. code-block:: python
 
     env.set_elevation("Open-Elevation")
 
 To get information from the Environment, use the following method:
 
-.. jupyter-execute::
+.. code-block:: python
 
     env.prints.launch_site_details()
 

docs/user/environment/1-atm-models/soundings.rst

@@ -70,7 +70,7 @@ We will use the same sounding station as we did for the Wyoming Soundings.
 
 Initialize a new Environment instance:
 
-.. jupyter-execute::
+.. code-block:: python
 
     url = r"https://rucsoundings.noaa.gov/get_raobs.cgi?data_source=RAOB&latest=latest&start_year=2019&start_month_name=Feb&start_mday=5&start_hour=12&start_min=0&n_hrs=1.0&fcst_len=shortest&airport=83779&text=Ascii%20text%20%28GSD%20format%29&hydrometeors=false&start=latest"