Improve the documentation

doc/dpp.txt

@@ -154,7 +154,8 @@ dpp#get([{plugin-name}])
 
                                                             *dpp#make_state()*
 dpp#make_state({base-path}, {config-path}[, {name}])
-		Save dpp's state in the cache script.
+		Save dpp's state and generate startup script from
+		{config-path}.
 		{base-path} is where your downloaded plugins will be placed.
 		{config-path} is TypeScript configuration file path to make
 		state.  It must be full path.
@@ -181,15 +182,16 @@ dpp#make_state({base-path}, {config-path}[, {name}])
 
                                                         *dpp#min#load_state()*
 dpp#min#load_state({base-path}[, {name}])
-		Load dpp's state from the cache script, {base-path} is where
-		your downloaded plugins will be placed.
+		Load dpp's state and execute startup script generated by
+		|dpp#make_state()|, {base-path} is where your downloaded
+		plugins will be placed.
 		{name} is plugins profile name.  The default is "vim" or
 		"nvim".
 		NOTE: It overwrites your 'runtimepath' completely, you must
 		not call it after change 'runtimepath' dynamically.
 		NOTE: The block is skipped if dpp's state is loaded.
 
-		It returns 1, if the cache script is old or invalid or not
+		It returns 1, if the startup script is old or invalid or not
 		found.
                                                                 *dpp#source()*
 dpp#source([{name}])