don't emphasize 'store derivation'

Author: fricklerhandwerk

doc/manual/source/glossary.md

@@ -37,9 +37,8 @@
 
   Derivations are implemented as [operating system processes that run in a sandbox](@docroot@/store/building.md#builder-execution).
   This sandbox by default only allows reading from store objects specified as inputs, and only allows writing to designated [outputs][output] to be [captured as store objects](@docroot@/store/building.md#processing-outputs).
-  How exactly to invoke such an isolated process is encoded in a [store derivation].
 
-  A derivation is typically specified as a [derivation expression] in the [Nix language], and [instantiated][instantiate] to a store derivation.
+  A derivation is typically specified as a [derivation expression] in the [Nix language], and [instantiated][instantiate] to a [store derivation].
   There are multiple ways of obtaining store objects from store derivatons, collectively called [realisation][realise].
 
   [derivation]: #gloss-derivation