bumpup default neovim version

doc/navigator.txt

@@ -151,7 +151,7 @@ SIMILAR PROJECTS / SPECIAL MENTIONS: *navigator-similar_projects_/_special_menti
 ================================================================================
 INSTALL                                                        *navigator-install*
 
-Require nvim-0.5.0 (a.k.a nightly)
+Require nvim-0.6.1 or nightly
 
 You can remove your lspconfig setup and use this plugin.
 The plugin depends on lspconfig and guihua.lua (https://github.com/ray-x/guihua.lua), which provides GUI and fzy support(migrate from romgrk's project (romgrk/fzy-lua-native)).
@@ -685,7 +685,7 @@ TODO                                                              *navigator-tod
 ERRORS AND BUG REPORTING                      *navigator-errors_and_bug_reporting*
 
 *   Please double check your setup and check if minium setup works or not
-*   It should works for 0.5.1, neovim 0.6.x prefered.
+*   It should works for 0.6.1, neovim 0.7.x prefered.
 *   Check console output
 *   Check `LspInfo` and treesitter status with `checkhealth`
 *   Turn on log and attach the log to your issue if possible you can remove any personal/company info in the log