Update README.md

Author: flowel1

README.md

@@ -86,7 +86,7 @@ The following contributions are added to _φ_ and to the j-th component of it
 
 Gaussian prior:
 
-<a href="https://www.codecogs.com/eqnedit.php?latex=\phi(\underline{\delta})&space;\text{:&space;}&space;\text{&space;}&space;\frac{1}{2}&space;\cdot&space;\beta_j&space;(\theta_j&space;&plus;&space;\delta_j&space;-&space;\mu_j)^2&space;\newline&space;\nabla_{\underline{\delta}}&space;\phi(\underline{\delta})_j&space;\text{:&space;}&space;\text{&space;}&space;\beta_j&space;\delta_j&space;&plus;\beta_j(\theta_j&space;-&space;\mu_j)" target="_blank"><img src="https://latex.codecogs.com/svg.latex?\phi(\underline{\delta})&space;\text{:&space;}&space;\text{&space;}&space;\frac{1}{2}&space;\cdot&space;\beta_j&space;(\theta_j&space;&plus;&space;\delta_j&space;-&space;\mu_j)^2&space;\newline&space;\nabla_{\underline{\delta}}&space;\phi(\underline{\delta})_j&space;\text{:&space;}&space;\text{&space;}&space;\beta_j&space;\delta_j&space;&plus;\beta_j(\theta_j&space;-&space;\mu_j)" title="\phi(\underline{\delta}) \text{: } \text{ } \frac{1}{2} \cdot \beta_j (\theta_j + \delta_j - \mu_j)^2 \newline \nabla_{\underline{\delta}} \phi(\underline{\delta})_j \text{: } \text{ } \beta_j \delta_j +\beta_j(\theta_j - \mu_j)" /></a>
+<a href="https://www.codecogs.com/eqnedit.php?latex=\phi(\underline{\delta})&space;\text{:&space;}&space;\text{&space;}&space;\frac{1}{2}&space;\cdot&space;\beta_j&space;(\theta_j&space;&plus;&space;\delta_j&space;-&space;\mu_j)^2&space;\newline&space;\newline&space;\nabla_{\underline{\delta}}&space;\phi(\underline{\delta})_j&space;\text{:&space;}&space;\text{&space;}&space;\beta_j&space;\delta_j&space;&plus;\beta_j(\theta_j&space;-&space;\mu_j)" target="_blank"><img src="https://latex.codecogs.com/svg.latex?\phi(\underline{\delta})&space;\text{:&space;}&space;\text{&space;}&space;\frac{1}{2}&space;\cdot&space;\beta_j&space;(\theta_j&space;&plus;&space;\delta_j&space;-&space;\mu_j)^2&space;\newline&space;\newline&space;\nabla_{\underline{\delta}}&space;\phi(\underline{\delta})_j&space;\text{:&space;}&space;\text{&space;}&space;\beta_j&space;\delta_j&space;&plus;\beta_j(\theta_j&space;-&space;\mu_j)" title="\phi(\underline{\delta}) \text{: } \text{ } \frac{1}{2} \cdot \beta_j (\theta_j + \delta_j - \mu_j)^2 \newline \newline \nabla_{\underline{\delta}} \phi(\underline{\delta})_j \text{: } \text{ } \beta_j \delta_j +\beta_j(\theta_j - \mu_j)" /></a>
 
 Lognormal prior: