CLEANUP: Fix typos in the spoe subsystem

Fix typos in the code comments of the spoe subsystem.
diff --git a/include/proto/spoe.h b/include/proto/spoe.h
index b6c4ee2..e5b3b4b 100644
--- a/include/proto/spoe.h
+++ b/include/proto/spoe.h
@@ -61,7 +61,7 @@
 /* Encode a buffer, possibly partially. It does the same thing than
  * 'spoe_encode_buffer', but if there is not enough space, it does not fail.
  * On success, it returns the number of copied bytes and <*buf> is moved after
- * the encoded value. If an error occured, it returns -1. */
+ * the encoded value. If an error occurred, it returns -1. */
 static inline int
 spoe_encode_frag_buffer(const char *str, size_t len, char **buf, char *end)
 {
@@ -113,7 +113,7 @@
 
 /* Encode a typed data using value in <smp>. On success, it returns the number
  * of copied bytes and <*buf> is moved after the encoded value. If an error
- * occured, it returns -1.
+ * occurred, it returns -1.
  *
  * If the value is too big to be encoded, depending on its type, then encoding
  * failed or the value is partially encoded. Only strings and binaries can be