Merge pull request #1161 from iceljc/master

refine chart plot prompt

Author: iceljc

src/Plugins/BotSharp.Plugin.ChartHandler/data/agents/6745151e-6d46-4a02-8de4-1c4f21c7da95/templates/util-chart-plot_instruction.liquid

@@ -32,6 +32,8 @@ You must strictly follow the "Hard Requirements", "Render Requirements", "Code R
 ***** Code Requirements *****
 ** You must strictly follow the valid javascript and ECharts.js syntax.
 ** You must ensure no syntax/runtime error before returning the response.
+** You must ensure the method is applied on variable with correct type, such as never applying "toFixed" to a non-number variable. Use explicit conversion if necessary.
+** You must ensure the math operations are valid, such as avoid dividing by zero.
 ** Please ensure the code can be executed and the charts are rendered correctly.