Update grid table examples

Specification drafting guidelines.md

@@ -104,13 +104,31 @@ Formulas and equations can be specified using LaTeX syntax within the markdown s
 
 	$$My formula$$
 
-	E.g.
+Examples:
 
+```latex
 	$\left[\int_{-infty}^{\infty} f(x) \; dx\right]$
-
+```
 $$\left[\int_{-infty}^{\infty} f(x) \; dx\right]$$
 
+```latex
+$$ f(n) =
+\begin{cases}
+n/2       & \quad \text{if } n \text{ is even}\\
+-(n+1)/2  & \quad \text{if } n \text{ is odd}
+\end{cases}
+$$
+```
+$$ f(n) =
+  \begin{cases}
+    n/2       & \quad \text{if } n \text{ is even}\\
+    -(n+1)/2  & \quad \text{if } n \text{ is odd}
+  \end{cases}
+$$
 More detailed information about formulas (operators, symbols, equations, ...) can be found at [LaTeX documentation](https://en.wikibooks.org/wiki/LaTeX/Mathematics)
 
 ## Anchors
 
+## Notes
+
+