CI: Fix a typo in the comment in the CI YAML file. [ci skip]

Author: junaruga

.github/workflows/test.yml

@@ -130,7 +130,7 @@ jobs:
         run: echo "OPENSSL_CONF=$(pwd)/test/openssl/fixtures/ssl/openssl_fips.cnf" >> $GITHUB_ENV
         if: matrix.fips-enabled
 
-      - name: set fips enviornment variable for testing.
+      - name: set fips environment variable for testing.
         run: echo "TEST_RUBY_OPENSSL_FIPS_ENABLED=true" >> $GITHUB_ENV
         if: matrix.fips-enabled