gcc: mention -c compiles into object file (#8381)

* gcc: mention -c compiles into object file

* gcc: clarify wording about compiling to object file

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

pages/common/gcc.md

@@ -19,6 +19,6 @@
 
 `gcc -S {{path/to/source.c}}`
 
-- Compile source code without linking:
+- Compile source code into an object file without linking:
 
 `gcc -c {{path/to/source.c}}`