Hardcode doc edit backlink (#34)

LilithHafner · web-flow · commit 84ba9e868822 · 2023-09-18T19:36:48.000-04:00
diff --git a/docs/src/index.md b/docs/src/index.md
@@ -1,3 +1,7 @@
+```@meta
+EditURL = "https://github.com/JuliaIO/ArgTools.jl/blob/master/docs/src/index.md"
+```
+
 # ArgTools
 
 ## Argument Handling
