Update prior.txt

docs/prior.txt

@@ -221,8 +221,8 @@ For BNSs it also generates the tidal deformability parameters.
 Prior Examples 
 -----------------
 
-Here we show some  examples of prior files for different waveform families.
-Note that to constrain a certain parameter to a fixed value, you just need:
+Here we show some examples of prior files for different waveform families.
+To constrain a certain parameter to a fixed value, you just need:
 
 .. code:: python
 
@@ -230,7 +230,7 @@ Note that to constrain a certain parameter to a fixed value, you just need:
 
 ------
 
-To constraint the prior to a certain range , you can use:
+To constrain the prior to a certain range , you can use:
 
 .. code:: python
 
@@ -238,6 +238,16 @@ To constraint the prior to a certain range , you can use:
 
 ------
 
+Note that to activate the tidal effect you need to specify in your configuration
+file:
+
+.. code:: python
+
+ frequency_domain_source_model=lal_binary_neutron_star 
+
+------
+
+
 Aligned spins waveform with tides off
 ==============
 
@@ -259,3 +269,11 @@ Precessing spins waveform with tides on
 .. literalinclude:: /../bilby/gw/prior_files/precessing_spins_waveform_tides_on.prior  
 
 
+-----------------
+Priors using a Jupyter notebook 
+-----------------
+
+Bilby saves as output the prior volume sampled. You might also find useful to
+produce priors directly from a Jupyter notebook. You can have a look at one of
+the Bilby tutorials to check how you define and plot priors in a Jupyter notebook:
+`making_priors.ipynb <https://git.ligo.org/lscsoft/bilby/-/blob/master/examples/tutorials/making_priors.ipynb>`_.