Fix Typos

[ghost]

go-ipfs/cmd/ipfs/daemon.go:405:29: "prometheous" is a misspelling of "prometheus"
go-ipfs/core/commands/mount_unix.go:38:46: "overriden" is a misspelling of "overridden"
go-ipfs/core/commands/object/object.go:37:34: "unkown" is a misspelling of "unknown"
go-ipfs/core/commands/object/object.go:200:47: "specifed" is a misspelling of "specified"
go-ipfs/core/commands/pin.go:526:0: "derivate" is a misspelling of "derivative"
go-ipfs/core/coreapi/object.go:341:26: "unkown" is a misspelling of "unknown"
go-ipfs/mk/util.mk:37:23: "varaible" is a misspelling of "variable"
go-ipfs/mk/util.mk:41:52: "exectued" is a misspelling of "executed"
go-ipfs/test/sharness/README.md:55:5: "cannonical" is a misspelling of "canonical"
go-ipfs/test/sharness/t0040-add-and-cat.sh:196:50: "suceeds" is a misspelling of "succeeds"
go-ipfs/test/sharness/t0040-add-and-cat.sh:790:36: "funtion" is a misspelling of "function"
go-ipfs/test/sharness/t0040-add-and-cat.sh:794:36: "funtion" is a misspelling of "function"
go-ipfs/test/sharness/t0040-add-and-cat.sh:805:36: "funtion" is a misspelling of "function"
go-ipfs/test/sharness/t0175-reprovider.sh:19:35: "startegy" is a misspelling of "strategy"
go-ipfs/test/sharness/t0184-http-proxy-over-p2p.sh:172:47: "propogates" is a misspelling of "propagates"
go-ipfs/test/sharness/t0272-urlstore.sh:31:46: "retrived" is a misspelling of "retrieved"

[Stebalien]

Thanks!