typo

Author: ZuseZ4

src/bootstrap/src/core/build_steps/llvm.rs

@@ -78,9 +78,9 @@ struct LdFlags {
 /// Allows each step to add C/Cxx flags which are only used for a specific cmake invocation.
 #[derive(Debug, Clone, Default)]
 struct CcFlags {
-    /// Addtional values for CMAKE_CC_FLAGS, to be added before all other values.
+    /// Additional values for CMAKE_CC_FLAGS, to be added before all other values.
     cflags: OsString,
-    /// Addtional values for CMAKE_CXX_FLAGS, to be added before all other values.
+    /// Additional values for CMAKE_CXX_FLAGS, to be added before all other values.
     cxxflags: OsString,
 }