Update code style

Code-Style.md

@@ -12,9 +12,11 @@
 - Always use zerolog for console output. In http handlers,
   use `hlog.FromRequest` to get a logger instance prepared with a bunch of metadata
 - As Linstrom is both intended for active use as well as providing a learning resource,
-  all functions and structs must be documented
-- Errors returned from public functions must be wrapped with `git.mstar.dev/mstar/goutils/other.Error`
+  all functions and structs must be documented and follow the conventions on [https://tip.golang.org/doc/comment]
+- Errors returned from public functions must either be wrapped with `git.mstar.dev/mstar/goutils/other.Error`
   and given appropriate descriptive information
+  _or_ return an error defined (as public variable) in that package.
+  Example: `other.Error("auth", "failed to do something important", originalError)`
 
 ## JS/TS