Move er syntax before pie chart one

README.md

@@ -347,71 +347,6 @@ sequenceDiagram
     David-->>Sophia: wake up, wake up
 ```
 
-### Pie chart syntax
-
-```go
-package main
-
-import (
-	"io"
-	"os"
-
-	"github.com/nao1215/markdown"
-	"github.com/nao1215/markdown/mermaid/piechart"
-)
-
-//go:generate go run main.go
-
-func main() {
-	f, err := os.Create("generated.md")
-	if err != nil {
-		panic(err)
-	}
-
-	chart := piechart.NewPieChart(
-		io.Discard,
-		piechart.WithTitle("mermaid pie chart builder"),
-		piechart.WithShowData(true),
-	).
-		LabelAndIntValue("A", 10).
-		LabelAndFloatValue("B", 20.1).
-		LabelAndIntValue("C", 30).
-		String()
-
-	err = markdown.NewMarkdown(f).
-		H2("Pie Chart").
-		CodeBlocks(markdown.SyntaxHighlightMermaid, chart).
-		Build()
-
-	if err != nil {
-		panic(err)
-	}
-}
-```
-
-Plain text output: [markdown is here](./doc/piechart/generated.md)
-````
-## Pie Chart
-```mermaid
-%%{init: {"pie": {"textPosition": 0.75}, "themeVariables": {"pieOuterStrokeWidth": "5px"}} }%%
-pie showData
-    title mermaid pie chart builder
-    "A" : 10
-    "B" : 20.100000
-    "C" : 30
-```
-````
-
-Mermaid output:
-```mermaid
-%%{init: {"pie": {"textPosition": 0.75}, "themeVariables": {"pieOuterStrokeWidth": "5px"}} }%%
-pie showData
-    title mermaid pie chart builder
-    "A" : 10
-    "B" : 20.100000
-    "C" : 30
-```
-
 ### Entity Relationship Diagram syntax
 
 ```go
@@ -588,6 +523,71 @@ erDiagram
 	}
 ```
 
+### Pie chart syntax
+
+```go
+package main
+
+import (
+	"io"
+	"os"
+
+	"github.com/nao1215/markdown"
+	"github.com/nao1215/markdown/mermaid/piechart"
+)
+
+//go:generate go run main.go
+
+func main() {
+	f, err := os.Create("generated.md")
+	if err != nil {
+		panic(err)
+	}
+
+	chart := piechart.NewPieChart(
+		io.Discard,
+		piechart.WithTitle("mermaid pie chart builder"),
+		piechart.WithShowData(true),
+	).
+		LabelAndIntValue("A", 10).
+		LabelAndFloatValue("B", 20.1).
+		LabelAndIntValue("C", 30).
+		String()
+
+	err = markdown.NewMarkdown(f).
+		H2("Pie Chart").
+		CodeBlocks(markdown.SyntaxHighlightMermaid, chart).
+		Build()
+
+	if err != nil {
+		panic(err)
+	}
+}
+```
+
+Plain text output: [markdown is here](./doc/piechart/generated.md)
+````
+## Pie Chart
+```mermaid
+%%{init: {"pie": {"textPosition": 0.75}, "themeVariables": {"pieOuterStrokeWidth": "5px"}} }%%
+pie showData
+    title mermaid pie chart builder
+    "A" : 10
+    "B" : 20.100000
+    "C" : 30
+```
+````
+
+Mermaid output:
+```mermaid
+%%{init: {"pie": {"textPosition": 0.75}, "themeVariables": {"pieOuterStrokeWidth": "5px"}} }%%
+pie showData
+    title mermaid pie chart builder
+    "A" : 10
+    "B" : 20.100000
+    "C" : 30
+```
+
 ## Creating an index for a directory full of markdown files
 The markdown package can create an index for Markdown files within the specified directory. This feature was added to generate indexes for Markdown documents produced by [nao1215/spectest](https://github.com/nao1215/spectest).