little fix for docs

docs/env_variables.md

@@ -104,6 +104,7 @@ fairly broad use of environment variables instead:
       detection)
     - `AFL_USE_CFISAN=1` - activates the Control Flow Integrity sanitizer (e.g.
       type confusion vulnerabilities)
+    - `AFL_CFISAN_VERBOSE=1` - outputs detailed information when control flow integrity violations occur, instead of simply terminating with "Illegal Instruction"
     - `AFL_USE_LSAN` - activates the leak sanitizer. To perform a leak check
       within your program at a certain point (such as at the end of an
       `__AFL_LOOP()`), you can run the macro  `__AFL_LEAK_CHECK();` which will
@@ -114,10 +115,7 @@ fairly broad use of environment variables instead:
     - `AFL_USE_TSAN=1` - activates the thread sanitizer to find thread race
       conditions
     - `AFL_USE_UBSAN=1` - activates the undefined behavior sanitizer
-
-  - Setting `AFL_UBSAN_VERBOSE=1` or `AFL_CFISAN_VERBOSE=1` enables verbose output for the respective sanitizers:
-    - `AFL_UBSAN_VERBOSE=1` - outputs detailed diagnostic information when undefined behavior is detected 
-    - `AFL_CFISAN_VERBOSE=1` - outputs detailed information when control flow integrity violations occur, instead of simply terminating with "Illegal Instruction"
+    - `AFL_UBSAN_VERBOSE=1` - outputs detailed diagnostic information when undefined behavior is detected, instead of simply terminating with "Illegal Instruction"   
 
   - `TMPDIR` is used by afl-as for temporary files; if this variable is not set,
     the tool defaults to /tmp.