Fix typo

Signed-off-by: Marcello Seri <[email protected]>

5-tensors.tex

@@ -337,7 +337,7 @@ \section{Tensor bundles}
 We now have the tools to further extend this idea and define tensor bundles as families of tensor spaces build on top of the fibres of the tangent bundle.
 
 \begin{definition}
-  The \emph{$(r,s)$-tensor bundle over $M$} as the bundle
+  The \emph{$(r,s)$-tensor bundle over $M$} is the bundle
   \begin{equation}
     T_s^r M = \bigsqcup_{p\in M}\left(\{p\}\times T_s^r(T_p M)\right)
   \end{equation}