Spelling and grammar fixes

pgproto3/README.md

@@ -1,6 +1,6 @@
 # pgproto3
 
-Package pgproto3 is a encoder and decoder of the PostgreSQL wire protocol version 3.
+Package pgproto3 is an encoder and decoder of the PostgreSQL wire protocol version 3.
 
 pgproto3 can be used as a foundation for PostgreSQL drivers, proxies, mock servers, load balancers and more.
 

pgproto3/doc.go

@@ -1,7 +1,7 @@
-// Package pgproto3 is a encoder and decoder of the PostgreSQL wire protocol version 3.
+// Package pgproto3 is an encoder and decoder of the PostgreSQL wire protocol version 3.
 //
 // The primary interfaces are Frontend and Backend. They correspond to a client and server respectively. Messages are
-// sent with Send (or a specialized Send variant). Messages are automatically bufferred to minimize small writes. Call
+// sent with Send (or a specialized Send variant). Messages are automatically buffered to minimize small writes. Call
 // Flush to ensure a message has actually been sent.
 //
 // The Trace method of Frontend and Backend can be used to examine the wire-level message traffic. It outputs in a

pgproto3/frontend.go

@@ -156,7 +156,7 @@ func (f *Frontend) SendDescribe(msg *Describe) {
 	}
 }
 
-// SendExecute sends a Execute message to the backend (i.e. the server). The message is not guaranteed to be written until
+// SendExecute sends an Execute message to the backend (i.e. the server). The message is not guaranteed to be written until
 // Flush is called.
 func (f *Frontend) SendExecute(msg *Execute) {
 	prevLen := len(f.wbuf)

pgproto3/startup_message.go

@@ -38,14 +38,14 @@ func (dst *StartupMessage) Decode(src []byte) error {
 	for {
 		idx := bytes.IndexByte(src[rp:], 0)
 		if idx < 0 {
-			return &invalidMessageFormatErr{messageType: "StartupMesage"}
+			return &invalidMessageFormatErr{messageType: "StartupMessage"}
 		}
 		key := string(src[rp : rp+idx])
 		rp += idx + 1
 
 		idx = bytes.IndexByte(src[rp:], 0)
 		if idx < 0 {
-			return &invalidMessageFormatErr{messageType: "StartupMesage"}
+			return &invalidMessageFormatErr{messageType: "StartupMessage"}
 		}
 		value := string(src[rp : rp+idx])
 		rp += idx + 1