demo: simplify inline math example for Goldmark

exampleSite/content/post/writing-technical-content/index.md

@@ -38,7 +38,7 @@ data.head()
 
 Academic supports a Markdown extension for $\LaTeX$ math. You can enable this feature by toggling the `math` option in your `config/_default/params.toml` file.
 
-To render *inline* or *block* math, wrap your LaTeX math with `$$...$$`.
+To render *inline* or *block* math, wrap your LaTeX math with `$...$` or `$$...$$`, respectively.
 
 Example **math block**:
 
@@ -53,7 +53,7 @@ renders as
 
 $$\gamma_{n} = \frac{ \left | \left (\mathbf x_{n} - \mathbf x_{n-1} \right )^T \left [\nabla F (\mathbf x_{n}) - \nabla F (\mathbf x_{n-1}) \right ] \right |}{\left \|\nabla F(\mathbf{x}_{n}) - \nabla F(\mathbf{x}_{n-1}) \right \|^2}$$
 
-Example **inline math** `$$\left \|\nabla F(\mathbf{x}_{n}) - \nabla F(\mathbf{x}_{n-1}) \right \|^2$$` renders as $$\left \|\nabla F(\mathbf{x}_{n}) - \nabla F(\mathbf{x}_{n-1}) \right \|^2$$ .
+Example **inline math** `$\nabla F(\mathbf{x}_{n})$` renders as $\nabla F(\mathbf{x}_{n})$.
 
 Example **multi-line math** using the `\\` math linebreak: