docs(stignore): add pattern ordering note and common pitfalls section#999

hrubymar10 wants to merge 1 commit intosyncthing:mainsyncthing/docs:mainfrom

hrubymar10:docs/stignore-pattern-ordering-pitfallshrubymar10/syncthing-docs:docs/stignore-pattern-ordering-pitfallsCopy head branch name to clipboard