Comment edits and cleanup

Original PR here: bitcoin/bitcoin#6044

Author: BitcoinPRReadingGroup

src/addrman.h

@@ -110,10 +110,10 @@ class CAddrInfo : public CAddress
  *
  * To that end:
  *  * Addresses are organized into buckets.
- *    * Address that have not yet been tried go into 1024 "new" buckets.
- *      * Based on the address range (/16 for IPv4) of source of the information, 64 buckets are selected at random
+ *    * Addresses that have not yet been tried go into 1024 "new" buckets.
+ *      * Based on the address range (/16 for IPv4) of the source of information, 64 buckets are selected at random.
  *      * The actual bucket is chosen from one of these, based on the range in which the address itself is located.
- *      * One single address can occur in up to 8 different buckets, to increase selection chances for addresses that
+ *      * One single address can occur in up to 8 different buckets to increase selection chances for addresses that
  *        are seen frequently. The chance for increasing this multiplicity decreases exponentially.
  *      * When adding a new address to a full bucket, a randomly chosen entry (with a bias favoring less recently seen
  *        ones) is removed from it first.