all: fix spelling mistakes
Corrections were only made to comments and can be reproduced with the
following sed.
sed -i 's/communciation/communication/g' src/internal/fuzz/sys_windows.go
sed -i 's/communciation/communication/g' src/internal/fuzz/sys_posix.go
sed -i 's/substitued/substituted/g' src/cmd/compile/internal/noder/irgen.go
Change-Id: I435aee2fdb41e73b694e6233d52742559d32cf7e
GitHub-Last-Rev:
a471e3d123aa6c8bb9b091e65de5d16609fb8db1
GitHub-Pull-Request: golang/go#48932
Reviewed-on: https://go-review.googlesource.com/c/go/+/355494
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>