style: replace em and en dashes across sources

asm/goobj.go

@@ -14,8 +14,8 @@ import (
 	"sync"
 )
 
-// This file emits GOOBJ — the Go toolchain's object format, which cmd/link
-// consumes directly — so gasm-assembled functions drop into a go build
+// This file emits GOOBJ, the Go toolchain's object format, which cmd/link
+// consumes directly, so gasm-assembled functions drop into a go build
 // without the Go assembler.  The layout follows cmd/internal/goobj: a
 // toolchain preamble ("go object ...\n!\n"), the go120ld header with its
 // block offsets, a string table, symbol definitions, the relocation /
@@ -178,7 +178,7 @@ type dwarfRelocSet struct {
 // does with its -p flag).  srcPath names the source file recorded in the
 // object's file table and line tables.  The toolchain's object preamble is
 // captured from the installed go tool asm, so the output links with the
-// toolchain it was produced on — exactly like a real assembly object.
+// toolchain it was produced on, exactly like a real assembly object.
 func (img *Image) GOObject(pkgPath, srcPath string) ([]byte, error) {
 	pre, err := toolchainObjectPreamble()
 	if err != nil {
@@ -198,7 +198,7 @@ func (img *Image) emitGOObject(pkgPath, srcPath string, pre []byte, minLC int, r
 		return nil, fmt.Errorf("GOOBJ emission requires a package path (-p)")
 	}
 
-	// The non-package definitions first — the DWARF symbols reference the
+	// The non-package definitions first, the DWARF symbols reference the
 	// functions by these indices: per function the four pc-value tables
 	// and the function itself, as cmd/asm lays them out.
 	type npSym struct {