autobump_constants: improve reason descriptions

Author: AlternateRT

Library/Homebrew/autobump_constants.rb

@@ -9,7 +9,7 @@
 # The valid symbols for passing to `no_autobump!` in a `Formula` or `Cask`.
 # @api public
 NO_AUTOBUMP_REASONS_LIST = T.let({
-  incompatible_version_format: "incompatible version format",
-  bumped_by_upstream:          "bumped by upstream",
+  incompatible_version_format: "the package has a version format that can only be updated manually",
+  bumped_by_upstream:          "updates to the package are handled by the upstream developers",
   requires_manual_review:      "a manual review of this package is required for inclusion in autobump",
 }.merge(NO_AUTOBUMP_REASONS_INTERNAL).freeze, T::Hash[Symbol, String])