Update documentation for CompilationContext to be more clear.

This better matches the text in defines,local_defines on cc_binary.

PiperOrigin-RevId: 412075161

src/main/java/com/google/devtools/build/lib/starlarkbuildapi/cpp/CcCompilationContextApi.java

@@ -38,15 +38,16 @@ public interface CcCompilationContextApi<FileT extends FileApi> extends Starlark
       name = "defines",
       doc =
           "Returns the set of defines needed to compile this target. Each define is a string."
-              + " These values are propagated to the target's transitive dependencies.",
+              + " These values are propagated to the target's transitive dependents, that is, "
+              + "any rules that depend on this target.",
       structField = true)
   Depset getStarlarkDefines();
 
   @StarlarkMethod(
       name = "local_defines",
       doc =
           "Returns the set of defines needed to compile this target. Each define is a string."
-              + " These values are not propagated to the target's transitive dependencies.",
+              + " These values are not propagated to the target's transitive dependents.",
       structField = true)
   Depset getStarlarkNonTransitiveDefines();