Fix typos

yamllint/rules/empty_lines.py

@@ -62,7 +62,7 @@ CONF = {'max': int,
 
 def check(conf, line):
     if line.start == line.end and line.end < len(line.buffer):
-        # Only alert on the last blank line of a serie
+        # Only alert on the last blank line of a series
         if (line.end < len(line.buffer) - 1 and
                 line.buffer[line.end + 1] == '\n'):
             return

yamllint/rules/line_length.py

@@ -59,7 +59,7 @@ Use this rule to set a limit to lines length.
    the following code snippet would **FAIL**:
    ::
 
-    - this line is waaaaaaaaaaaaaay too long but could be easily splitted...
+    - this line is waaaaaaaaaaaaaay too long but could be easily split...
 
 #. With ``line-length: {max: 60, allow-non-breakable-words: no}``