fix latex misrendering

content/notes/CJK + Latex Support (测试).md

@@ -14,7 +14,7 @@ title: "CJK + Latex Support (测试)"
 Block math works with two dollar signs `$$...$$`
 
 $$f(x) = \int_{-\infty}^\infty
-    f\hat(\xi\),e^{2 \pi i \xi x}
+    f\hat(\xi),e^{2 \pi i \xi x}
     \,d\xi$$
 	
 Inline math also works with single dollar signs `$...$`. For example, Euler's identity but inline: $e^{i\pi} = 0$