myst removed from section heading

Author: spring-haru

5a_Development_Accounting.ipynb

@@ -2134,16 +2134,26 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "heading_collapsed": true
+    "editable": true,
+    "heading_collapsed": true,
+    "slideshow": {
+     "slide_type": ""
+    },
+    "tags": []
    },
    "source": [
-    "## {glue:text}`latest_year_glued`年"
+    "## 2023年"
    ]
   },
   {
    "cell_type": "markdown",
    "metadata": {
-    "hidden": true
+    "editable": true,
+    "hidden": true,
+    "slideshow": {
+     "slide_type": ""
+    },
+    "tags": []
    },
    "source": [
     "{glue:text}`latest_year_glued`年だけを抽出する。"