docs: apply corrections in config.example.toml (#492)

* Fix Issues in config.example.toml

* Update config.example.toml

config.example.toml

@@ -1,6 +1,6 @@
 # Include any additional configuration file(s)
 # [include] sections are processed in the order you write them
-# Files in $CONFIG_DIR/topgrade/topgrade.d/ are automatically included at the beginning of this file
+# Files in $CONFIG_DIR/topgrade.d/ are automatically included before this file
 [include]
 #paths = ["/etc/topgrade.toml"]
 
@@ -23,8 +23,8 @@
 # Sudo command to be used
 #sudo_command = "sudo"
 
-# Run `sudo -v` to cache credentials at the start of the run; this avoids a
-# blocking password prompt in the middle of a possibly-unattended run.
+# Run `sudo -v` to cache credentials at the start of the run
+# This avoids a blocking password prompt in the middle of an unattended run
 #pre_sudo = false
 
 # Run inside tmux
@@ -33,7 +33,7 @@
 # List of remote machines with Topgrade installed on them
 #remote_topgrades = ["toothless", "pi", "parnas"]
 
-# Arguments to pass SSH when upgrading remote systems
+# Arguments to pass to SSH when upgrading remote systems
 #ssh_arguments = "-o ConnectTimeout=2"
 
 # Path to Topgrade executable on remote machines