DOC: Fix typos in lua documentation
diff --git a/src/filters.c b/src/filters.c
index 3956667..734058c 100644
--- a/src/filters.c
+++ b/src/filters.c
@@ -41,7 +41,7 @@
  * - BREAK_EXECUTION must be used to break the loop and set the filter from
  *   which to resume the next time.
  *
- *  Here is an exemple:
+ *  Here is an example:
  *
  *    RESUME_FILTER_LOOP(stream, channel) {
  *        ...