docs: remove quotes in ldgen documentation for adding fragment file

Closes https://github.com/espressif/esp-idf/issues/5142

docs/en/api-guides/linker-script-generation.rst

@@ -54,7 +54,7 @@ fragment file. The path can either be an absolute path or a relative path from t
 
 .. code-block:: make
 
-    COMPONENT_ADD_LDFRAGMENTS += "my_linker_fragment_file.lf"
+    COMPONENT_ADD_LDFRAGMENTS += my_linker_fragment_file.lf
 
 CMake
 """""

docs/zh_CN/api-guides/linker-script-generation.rst

@@ -27,7 +27,7 @@ Make
 .. code-block:: make
 
     # 文件路径相对于组件的 Makefile
-    COMPONENT_ADD_LDFRAGMENTS += "path/to/linker_fragment_file.lf" "path/to/another_linker_fragment_file.lf"
+    COMPONENT_ADD_LDFRAGMENTS += my_linker_fragment_file.lf
 
 CMake
 """""