docs: fix typo of build component aliases name

docs/en/api-guides/build-system.rst

@@ -1143,7 +1143,7 @@ For example, to get the Python interpreter used for the build:
 
   - BUILD_DIR - build directory; set from ``idf_build_process`` BUILD_DIR argument
   - BUILD_COMPONENTS - list of components included in the build; set by ``idf_build_process``
-  - BUILD_COMPONENTS_ALIASES - list of library alias of components included in the build; set by ``idf_build_process``
+  - BUILD_COMPONENT_ALIASES - list of library alias of components included in the build; set by ``idf_build_process``
   - C_COMPILE_OPTIONS - compile options applied to all components' C source files
   - COMPILE_OPTIONS - compile options applied to all components' source files, regardless of it being C or C++
   - COMPILE_DEFINITIONS - compile definitions applied to all component source files