doc: fix typos (#24181)

Signed-off-by: Boteng Yao <boteng@google.com>

Mirrored from https://github.com/envoyproxy/envoy @ f162c0a5eb0c4af95b7d080874aaa7de80cb594a

envoy/extensions/filters/http/ext_proc/v3/ext_proc.proto

@@ -84,7 +84,7 @@ option (xds.annotations.v3.file_status).work_in_progress = true;
 // * A server may choose to examine all or part of the HTTP message bodies depending
 //   on the content of the headers.
 // * A server may choose to immediately reject some messages based on their HTTP
-//   headers (or other dynamic metadata) and more carefully examine others
+//   headers (or other dynamic metadata) and more carefully examine others.
 // * A server may asynchronously monitor traffic coming through the filter by inspecting
 //   headers, bodies, or both, and then decide to switch to a synchronous processing
 //   mode, either permanently or temporarily.
@@ -142,7 +142,7 @@ message ExternalProcessor {
   // when the filter is running in synchronous mode. Whenever
   // the proxy sends a message on the stream that requires a response, it will
   // reset this timer, and will stop processing and return an error (subject
-  // to the processing mode) if the timer expires before a matching response.
+  // to the processing mode) if the timer expires before a matching response
   // is received. There is no timeout when the filter is running in asynchronous
   // mode. Default is 200 milliseconds.
   google.protobuf.Duration message_timeout = 7;

envoy/service/auth/v3/attribute_context.proto

@@ -74,9 +74,10 @@ message AttributeContext {
     // ``URI Subject Alternative Names``, ``DNS Subject Alternate Names`` or ``Subject`` in that order.
     // The primary identity should be the principal. The principal format is issuer specific.
     //
-    // Example:
-    // *    SPIFFE format is ``spiffe://trust-domain/path``
-    // *    Google account format is ``https://accounts.google.com/{userid}``
+    // Examples:
+    //
+    // - SPIFFE format is ``spiffe://trust-domain/path``.
+    // - Google account format is ``https://accounts.google.com/{userid}``.
     string principal = 4;
 
     // The X.509 certificate used to authenticate the identify of this peer.
@@ -121,7 +122,7 @@ message AttributeContext {
     // the URL path and query-string. No decoding is performed.
     string path = 4;
 
-    // The HTTP request ``Host`` or '`Authority`` header value.
+    // The HTTP request ``Host`` or ``:authority`` header value.
     string host = 5;
 
     // The HTTP URL scheme, such as ``http`` and ``https``.