Merge branch 'bugfix/ldgen_surround_docs_correction' into 'master'

docs: fix error on ldgen generated symbol with SURROUND

See merge request espressif/esp-idf!12732

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

@@ -511,18 +511,18 @@ generates an output on the linker script:
 .. code-block:: none
 
     . = ALIGN(8)
-    __my_sym_start = ABSOLUTE(.)
+    _my_sym_start = ABSOLUTE(.)
     KEEP(lib1.a:obj1.*( SORT(.rodata) SORT(.rodata.*) ))
-    __my_sym_end = ABSOLUTE(.)
+    _my_sym_end = ABSOLUTE(.)
 
 Note that ALIGN and SURROUND, as mentioned in the flag descriptions, are order sensitive. Therefore, if for the same mapping fragment these two are switched, the following is generated instead:
 
 .. code-block:: none
 
-    __my_sym_start = ABSOLUTE(.)
+    _my_sym_start = ABSOLUTE(.)
     . = ALIGN(8)
     KEEP(lib1.a:obj1.*( SORT(.rodata) SORT(.rodata.*) ))
-    __my_sym_end = ABSOLUTE(.)
+    _my_sym_end = ABSOLUTE(.)
 
 
 .. _ldgen-symbol-granularity-placements :