fix CI testing for axioms in build output

.gitlab-ci.yml

@@ -8,7 +8,7 @@ iris-coq8.5.3:
   - . build/opam-ci.sh 'coq 8.5.3' 'coq-mathcomp-ssreflect 1.6.1'
   # build
   - 'time make -j8 TIMED=y 2>&1 | tee build-log.txt'
-  - 'if fgrep Axiom build-log-full.txt >/dev/null; then exit 1; fi'
+  - 'if fgrep Axiom build-log.txt >/dev/null; then exit 1; fi'
   - 'cat build-log.txt | egrep "[a-zA-Z0-9_/-]+ \(user: [0-9]" | tee build-time.txt'
   - 'if (( RANDOM % 10 == 0 )); then make validate; fi'
   cache: