Fix typos in comments and tutorial docs

tutorial.md

@@ -146,7 +146,7 @@ class EchoHandler : public HandlerAdapter<std::string> {
 };
 ```
 
-Notice that we override other methods — readException and readEOF. There are few other methods that can be overriden. If you need to handle a particular event, just override the corresponding virtual method.
+Notice that we override other methods — readException and readEOF. There are few other methods that can be overridden. If you need to handle a particular event, just override the corresponding virtual method.
 
 Now onto the client’s pipeline factory. It is identical the server’s pipeline factory apart from _EventBaseHandler_ — which handles writing data from an event loop thread.
 

wangle/acceptor/FizzConfigUtil.h

@@ -31,7 +31,7 @@ class FizzConfigUtil {
   /*
    * Adds certs to the cert manager from context configs.
    * If strictSSL is specified will throw on any failed cert load.
-   * Returns true if atleast one cert was successfully loaded
+   * Returns true if at least one cert was successfully loaded
    */
   static bool addCertsToManager(
       const std::vector<SSLContextConfig>& configs,

wangle/acceptor/test/ConnectionManagerTest.cpp

@@ -259,7 +259,7 @@ TEST_F(ConnectionManagerTest, testDropEstablishedVerifyOrder) {
 
   // Initially connection will be added in decreasing order highest to lowest,
   // it will be N, N - 1, N - 2, ..., 1, 0, thats because we loop from (0, N)
-  // and push items at the begining of the loop. During drop connections we
+  // and push items at the beginning of the loop. During drop connections we
   // start from last item which will be lowest and we push them back to
   // identifiers vector, meaning everything will be sorted in increasing order
   ASSERT_TRUE(identifiers.size() >= 2);

wangle/ssl/TLSInMemoryTicketProcessor.h

@@ -44,7 +44,7 @@ class TLSInMemoryTicketProcessor {
   virtual ~TLSInMemoryTicketProcessor();
   TLSTicketKeySeeds initInMemoryTicketSeeds();
 
-  /* Add a callback fucntion to be fired periodically. */
+  /* Add a callback function to be fired periodically. */
 
  private:
   void initScheduler();