Fix typo in Makefile.

Makefile

@@ -1,7 +1,7 @@
 # Try to get the commit hash from 1) git 2) the VERSION file 3) fallback.
 LAST_COMMIT := $(or $(shell git rev-parse --short HEAD 2> /dev/null),$(shell head -n 1 VERSION | grep -oP -m 1 "^[a-z0-9]+$$"),"UNKNOWN")
 
-# Try to get the semver from 1) git 2) the VERSION file 3) fallbakc.
+# Try to get the semver from 1) git 2) the VERSION file 3) fallback.
 VERSION := $(or $(shell git describe --tags --abbrev=0 2> /dev/null),$(shell grep -oP "tag: \K(.*)(?=,)" VERSION),"v0.0.0")
 
 BUILDSTR := ${VERSION} (\#${LAST_COMMIT} $(shell date -u +"%Y-%m-%dT%H:%M:%S%z"))