Correcting typo in newest docstring

"descriving" -> "describing"
And giving a bit more detail on the definitions of response function angles.

Author: wvanzeist

docs/riroriro/detectabilityfuns.rst

@@ -69,13 +69,15 @@ alignment, specified by four angles as in Finn (1996), Belczynski et al.
 Parameters
 ----------
 theta: float
-    One of the angles descriving the direction of the line of sight to the
-    gravitational wave source relative to the axes of the detector’s arms
-    (sky-location coordinates). Ranges from 0 to π/2 rad (90 deg).
+    The ecliptic latitude, one of the angles describing the direction of
+    the line of sight to the gravitational wave source relative to the axes
+    of the detector’s arms (sky-location coordinates of the binary). Ranges
+    from 0 to π/2 rad (90 deg).
 phi: float
-    One of the angles descriving the direction of the line of sight to the
-    gravitational wave source relative to the axes of the detector’s arms
-    (sky-location coordinates). Ranges from 0 to 2π rad (360 deg).
+    The ecliptic longitude, one of the angles describing the direction of
+    the line of sight to the gravitational wave source relative to the axes
+    of the detector’s arms (sky-location coordinates of the binary). Ranges
+    from 0 to 2π rad (360 deg).
 iota: float
     The inclination angle of the binary. Ranges from 0 to π/2 rad (90 deg).
 psi: float

riroriro/detectabilityfuns.py

@@ -129,13 +129,15 @@ def specific_orientation_SNR(theta,phi,iota,psi,SNR_in,angle_unit='rad'):
     Parameters
     ----------
     theta: float
-        One of the angles descriving the direction of the line of sight to the
-        gravitational wave source relative to the axes of the detector’s arms
-        (sky-location coordinates). Ranges from 0 to π/2 rad (90 deg).
+        The ecliptic latitude, one of the angles describing the direction of
+        the line of sight to the gravitational wave source relative to the axes
+        of the detector’s arms (sky-location coordinates of the binary). Ranges
+        from 0 to π/2 rad (90 deg).
     phi: float
-        One of the angles descriving the direction of the line of sight to the
-        gravitational wave source relative to the axes of the detector’s arms
-        (sky-location coordinates). Ranges from 0 to 2π rad (360 deg).
+        The ecliptic longitude, one of the angles describing the direction of
+        the line of sight to the gravitational wave source relative to the axes
+        of the detector’s arms (sky-location coordinates of the binary). Ranges
+        from 0 to 2π rad (360 deg).
     iota: float
         The inclination angle of the binary. Ranges from 0 to π/2 rad (90 deg).
     psi: float