Documented '_strlen'

strings.c

@@ -1,7 +1,11 @@
 #include "main.h"
 
 /**
- * _strlen - nuts
+ * _strlen - Takes string and return its length
+ *
+ * @str: Address to the head of the string (Array of Characters) (Lost btw)
+ *
+ * Returns: Length of String
  */
 int _strlen(char *str)
 {