spelling: fix compatability -> compatibility

examples/coap_list.h

@@ -21,7 +21,7 @@
  * See 'man coap_pdu_setup' for further information.
  *
  * examples/coap_list.[ch] files will be removed in a future release
- * They are left here to support building backward compatability of old versions
+ * They are left here to support building backward compatibility of old versions
  * of coap-client
  */
 

include/coap2/coap_dtls.h

@@ -201,7 +201,7 @@ typedef struct coap_dtls_pki_t {
   uint8_t allow_no_crl;            /**< 1 ignore if CRL not there */
   uint8_t allow_expired_crl;       /**< 1 if expired crl is allowed */
   uint8_t reserved[6];             /**< Reserved - must be set to 0 for
-                                        future compatability */
+                                        future compatibility */
                                    /* Size of 6 chosen to align to next
                                     * parameter, so if newly defined option
                                     * it can use one of the reserverd slot so

include/coap2/encode.h

@@ -74,7 +74,7 @@ unsigned int coap_encode_var_safe(uint8_t *buf,
 
 /**
  * @deprecated Use coap_encode_var_safe() instead.
- * Provided for backward compatability.  As @p value has a
+ * Provided for backward compatibility.  As @p value has a
  * maximum value of 0xffffffff, and buf is usually defined as an array, it
  * is unsafe to continue to use this variant if buf[] is less than buf[4].
  *

man/coap_encryption.txt.in

@@ -127,7 +127,7 @@ typedef struct coap_dtls_pki_t {
   uint8_t allow_no_crl;             /* 1 ignore if CRL not there */
   uint8_t allow_expired_crl;        /* 1 if expired crl is allowed */
   uint8_t reserved[6];              /* Reserved - must be set to 0 for
-                                       future compatability */
+                                       future compatibility */
 
   /** CN check call-back function
    * If not NULL, is called when the TLS connection has passed the configured