Fix typos (#1)

Author: kianmeng

01-processes.livemd

@@ -88,7 +88,7 @@ When a process receives a message, this message ends up in the process mailbox.
 ```mermaid
 sequenceDiagram;
   participant other_pid as Other process
-  participant pid as Proces
+  participant pid as Process
   participant mailbox as Mailbox
 
   other_pid->>pid: Send message

05-broadway.livemd

@@ -235,4 +235,4 @@ end)
 VisualHelpers.broadway_sup_tree(pipeline)
 ```
 
-Batching works on **batch size** plus **batch timeout**. If a batches reaches the configured size, then it gets handed to the batcher. If it doens't reach the configured size within a configurable timeout, it gets handed to the batcher anyways when the timeout expires, as we can see in the example above with the last two batches.
+Batching works on **batch size** plus **batch timeout**. If a batches reaches the configured size, then it gets handed to the batcher. If it doesn't reach the configured size within a configurable timeout, it gets handed to the batcher anyways when the timeout expires, as we can see in the example above with the last two batches.