refactor: use a more modern writing style to simplify code (#3834)

Signed-off-by: deepdring <deepdrink@icloud.com>

runtime/help/plugins.md

@@ -126,7 +126,7 @@ micro.Log("Hello")
 The packages and their contents are listed below (in Go type signatures):
 
 * `micro`
-    - `TermMessage(msg interface{}...)`: temporarily close micro and print a
+    - `TermMessage(msg any...)`: temporarily close micro and print a
        message
 
     - `TermError(filename string, lineNum int, err string)`: temporarily close
@@ -134,7 +134,7 @@ The packages and their contents are listed below (in Go type signatures):
 
     - `InfoBar() *InfoPane`: return the infobar BufPane object.
 
-    - `Log(msg interface{}...)`: write a message to `log.txt` (requires
+    - `Log(msg any...)`: write a message to `log.txt` (requires
        `-debug` flag, or binary built with `build-dbg`).
 
     - `SetStatusInfoFn(fn string)`: register the given lua function as
@@ -157,7 +157,6 @@ The packages and their contents are listed below (in Go type signatures):
     [InfoPane](https://pkg.go.dev/github.com/zyedidia/micro/v2/internal/action#InfoPane)
     [Tab](https://pkg.go.dev/github.com/zyedidia/micro/v2/internal/action#Tab)
     [TabList](https://pkg.go.dev/github.com/zyedidia/micro/v2/internal/action#TabList)
-    [interface{} / any](https://go.dev/tour/methods/14)
 
 * `micro/config`
     - `MakeCommand(name string, action func(bp *BufPane, args[]string),
@@ -210,18 +209,18 @@ The packages and their contents are listed below (in Go type signatures):
     - `RTHelp`: runtime files for help documents.
     - `RTPlugin`: runtime files for plugin source code.
 
-    - `RegisterCommonOption(pl string, name string, defaultvalue interface{})`:
+    - `RegisterCommonOption(pl string, name string, defaultvalue any)`:
        registers a new option for the given plugin. The name of the
        option will be `pl.name`, and will have the given default value. Since
        this registers a common option, the option will be modifiable on a
        per-buffer basis, while also having a global value (in the
        GlobalSettings map).
 
-    - `RegisterGlobalOption(pl string, name string, defaultvalue interface{})`:
+    - `RegisterGlobalOption(pl string, name string, defaultvalue any)`:
        same as `RegisterCommonOption`, but the option cannot be modified
        locally to each buffer.
 
-    - `GetGlobalOption(name string) interface{}`: returns the value of a
+    - `GetGlobalOption(name string) any`: returns the value of a
        given plugin in the `GlobalSettings` map.
 
     - `SetGlobalOption(option, value string) error`: sets an option to a
@@ -229,7 +228,7 @@ The packages and their contents are listed below (in Go type signatures):
        the value into the proper type for the option. Can return an error if the
        option name is not valid, or the value can not be converted.
 
-    - `SetGlobalOptionNative(option string, value interface{}) error`: sets
+    - `SetGlobalOptionNative(option string, value any) error`: sets
        an option to a given value, where the type of value is the actual
        type of the value internally. Can return an error if the provided value
        is not valid for the given option.
@@ -240,7 +239,6 @@ The packages and their contents are listed below (in Go type signatures):
     [Buffer](https://pkg.go.dev/github.com/zyedidia/micro/v2/internal/buffer#Buffer)
     [buffer.Completer](https://pkg.go.dev/github.com/zyedidia/micro/v2/internal/buffer#Completer)
     [Error](https://pkg.go.dev/builtin#error)
-    [interface{} / any](https://go.dev/tour/methods/14)
     [filepath.Match](https://pkg.go.dev/path/filepath#Match)
 
 * `micro/shell`
@@ -266,7 +264,7 @@ The packages and their contents are listed below (in Go type signatures):
        stdout from the command to the returned string.
 
     - `JobStart(cmd string, onStdout, onStderr,
-                onExit func(string, []interface{}), userargs ...interface{})
+                onExit func(string, []any), userargs ...any)
                 *exec.Cmd`:
        Starts a background job by running the shell on the given command
        (using `sh -c`). Three callbacks can be provided which will be called
@@ -275,7 +273,7 @@ The packages and their contents are listed below (in Go type signatures):
        argument of the callback. Returns the started command.
 
     - `JobSpawn(cmd string, cmdArgs []string, onStdout, onStderr,
-                onExit func(string, []interface{}), userargs ...interface{})
+                onExit func(string, []any), userargs ...any)
                 *exec.Cmd`:
        same as `JobStart`, except doesn't run the command through the shell
        and instead takes as inputs the list of arguments. Returns the started
@@ -285,8 +283,8 @@ The packages and their contents are listed below (in Go type signatures):
     - `JobSend(cmd *exec.Cmd, data string)`: sends some data to a job's stdin.
 
     - `RunTermEmulator(h *BufPane, input string, wait bool, getOutput bool,
-                       callback func(out string, userargs []interface{}),
-                       userargs []interface{}) error`:
+                       callback func(out string, userargs []any),
+                       userargs []any) error`:
        starts a terminal emulator from a given BufPane with the input command.
        If `wait` is true, it will wait for the user to exit by pressing enter
        once the executable has terminated, and if `getOutput` is true, it will