vale: add page (#8851)

pages/common/vale.md

@@ -0,0 +1,28 @@
+# vale
+
+> Extensible style checker that supports multiple markup formats, such as Markdown and AsciiDoc.
+> More information: <https://vale.sh>.
+
+- Check the style of a file:
+
+`vale {{file}}`
+
+- Check the style of a file with a specified configuration:
+
+`vale --config='{{path/to/.vale.ini}}' {{file}}`
+
+- Output the results in JSON format:
+
+`vale --output=JSON {{file}}`
+
+- Check style issues at the specific severity and higher:
+
+`vale --minAlertLeve={{suggestion|warning|error}} {{file}}`
+
+- Check the style from stdin, specifying markup format:
+
+`cat {{file.md}} | vale --ext=.md`
+
+- List the current configuration:
+
+`vale ls-config`