all: fix misprints in comments

These were found by grepping the comments from the go code and feeding
the output to aspell.

Change-Id: Id734d6c8d1938ec3c36bd94a4dbbad577e3ad395
Reviewed-on: https://go-review.googlesource.com/10941
Reviewed-by: Aamir Khan <syst3m.w0rm@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/src/cmd/compile/internal/gc/reflect.go b/src/cmd/compile/internal/gc/reflect.go
index 6c0962f..8ef2380 100644
--- a/src/cmd/compile/internal/gc/reflect.go
+++ b/src/cmd/compile/internal/gc/reflect.go
@@ -105,7 +105,7 @@
 	return l
 }
 
-// Builds a type respresenting a Bucket structure for
+// Builds a type representing a Bucket structure for
 // the given map type.  This type is not visible to users -
 // we include only enough information to generate a correct GC
 // program for it.
@@ -1234,7 +1234,7 @@
 			// a package that imports the first one and does use *T pointers.
 			// The second module will end up defining type data for *T and a
 			// type.*T symbol pointing at it. It's important that calling
-			// .PtrTo() on the refect.Type for T returns this type data and
+			// .PtrTo() on the reflect.Type for T returns this type data and
 			// not some synthesized object, so we need reflect to be able to
 			// find it!
 			if !Ctxt.Flag_dynlink {