docs: edit spelling (#10)

Co-authored-by: bxvtr <bxvtr@users.noreply.github.com>

Author: bxvtr

docs/40-operations/operations-overview.md

@@ -53,7 +53,7 @@ This Runtime is operated by the Execution Stack.
 
 ---
 
-## Trading Runtime Model
+## Core Runtime Model
 
 Both Runtimes execute the same event-driven trading core.
 
@@ -113,7 +113,7 @@ This event-driven feedback loop ensures consistent infrastructure behavior acros
 
 ## Runtime Components
 
-The Trading Runtime consists of several cooperating components.
+The Core Runtime consists of several cooperating components.
 
 ### State Management
 

docs/50-evolution/milestones.md

@@ -65,7 +65,7 @@ Once the Core Runtime and supporting tooling existed, the focus moved to formali
 
 **Main outcomes**
 
-- Created the MkDocs-based architecture documentation
+- Created this MkDocs-based architecture documentation
 - Documented the semantic and conceptual model of the infrastructure rather than repository-level implementation details
 - Structured documentation around architecture, concepts, Stacks, operations, and evolution
 - Cleaned up project structure at the GitHub organization and repository level