chore: fix some wrong commets

internal/crosscompile/compile/libc/newlibesp.go

@@ -21,10 +21,12 @@ var _libcCCFlags = []string{
 	"-ffreestanding",
 }
 
+// withDefaultCCFlags appends default C compiler flags to the provided flags
 func withDefaultCCFlags(ccflags []string) []string {
 	return append(ccflags, _libcCCFlags...)
 }
 
+// GetNewlibESP32Config returns the configuration for downloading and building newlib for ESP32
 func GetNewlibESP32Config() compile.LibConfig {
 	return compile.LibConfig{
 		Url:           "https://github.com/goplus/newlib/archive/refs/tags/esp-4.3.0_20250211-patch3.tar.gz",

internal/crosscompile/compile/libc/picolibc.go

@@ -7,6 +7,7 @@ import (
 	"github.com/goplus/llgo/internal/crosscompile/compile"
 )
 
+// GetPicolibcConfig returns the configuration for downloading and building picolibc
 func GetPicolibcConfig() compile.LibConfig {
 	return compile.LibConfig{
 		Name:          "picolibc",