Update RFC-00xx-automatic-implicit-differentiation.md

Author: 0x00b1

RFC-00xx-automatic-implicit-differentiation.md

@@ -315,13 +315,13 @@ $$\min_{x} \frac{1}{2} ||\textbf{r}(x, \theta)||^2,$$
 
 where $\textbf{r}$ is a residual function, $x$ are the parameters with respect to which the function is minimized, and $\theta$ are optional additional arguments.
 
+##### Gauss–Newton
+
 The update equation is solved for every iteration to find the update to the parameters:
 
 $$\mathbf{J} \mathbf{J^T} h_{gn} = - \mathbf{J^T} \mathbf{r}$$
 
-where \mathbf{J} is the Jacobian of the residual function w.r.t. parameters.
-
-##### Gauss–Newton
+where $\mathbf{J}$ is the Jacobian of the residual function w.r.t. parameters.
 
 ```Python
 from typing import Callable, Optional