all: fix typos in go file comments

These typos were found by executing grep, aspell, sort and uniq in
a pipe and searching in the resulted list manually for possible typos.

grep -r --include '.go' -E '^// .$' . | aspell list | sort | uniq

src/cmd/internal/obj/arm64/asm7.go

@@ -3215,7 +3215,7 @@ func SYSARG4(op1 int, Cn int, Cm int, op2 int) int {
 	return SYSARG5(0, op1, Cn, Cm, op2)
 }
 
-// checkUnpredictable checks if the sourse and transfer registers are the same register.
+// checkUnpredictable checks if the source and transfer registers are the same register.
 // ARM64 manual says it is "constrained unpredictable" if the src and dst registers of STP/LDP are same.
 func (c *ctxt7) checkUnpredictable(p *obj.Prog, isload bool, wback bool, rn int16, rt1 int16, rt2 int16) {
 	if wback && rn != REGSP && (rn == rt1 || rn == rt2) {

src/testing/fuzz.go

@@ -40,7 +40,7 @@ var (
 
 // fuzzWorkerExitCode is used as an exit code by fuzz worker processes after an
 // internal error. This distinguishes internal errors from uncontrolled panics
-// and other failiures. Keep in sync with internal/fuzz.workerExitCode.
+// and other failures. Keep in sync with internal/fuzz.workerExitCode.
 const fuzzWorkerExitCode = 70
 
 // InternalFuzzTarget is an internal type but exported because it is

test/fixedbugs/issue47068.dir/a.go

@@ -10,6 +10,6 @@ func A() {
 		10: 0, 11: 0, 12: 0, 13: 0, 14: 0, 15: 0, 16: 0, 17: 0, 18: 0, 19: 0,
 		20: 0, 21: 0, 22: 0, 23: 0, 24: 0, 25: 0, 26: 0, 27: 0, 28: 0, 29: 0}
 	if len(m) != 30 {
-		panic("unepexted map length")
+		panic("unexpected map length")
 	}
 }

test/typeparam/graph.go

@@ -36,7 +36,7 @@ type _Graph[_Node _NodeC[_Edge], _Edge _EdgeC[_Node]] struct {
 	nodes []_Node
 }
 
-// _NodeC is the contraints on a node in a graph, given the _Edge type.
+// _NodeC is the constraints on a node in a graph, given the _Edge type.
 type _NodeC[_Edge any] interface {
 	comparable
 	Edges() []_Edge