FFCatalog: FullSphere: resolve ambiguity

Doc/FFCatalog/FormFactors.tex

@@ -917,7 +917,7 @@ so that the exponential reduces to a cosine:
   = 2\pi \int_0^R \d r\,r^2 \int_0^{\pi} \d\theta\, \sin\theta
    \cos\left(q_z \cos \theta\right) J_0\left(q_\parallel r\sin \theta\right).
 \end{equation}
-Expand the cosine and the Bessel function:
+Expand the outer cosine and the Bessel function:
 \begin{equation}
   I(\q,R)
   = 2\pi \int_0^R \d r\,r^2 \int_0^{\pi} \d\theta\, \sin\theta