docs: make all of EOL less than 80.

dots.tutor

@@ -26,7 +26,8 @@ You can use `<C-n>`{normal} to open/close file explorer which will appear on the
 Now move cursor to the line of **lua** folder, press `o`{normal} to open it, repeat this
 process to **core** folder, then open **event.lua** in new buffer by press `o`{normal} too.
 You can press `<C-h>`{normal} and `<C-l>`{normal} to move cursor to file explorer and back to
-this buffer. Since we nolonger need the file explorer in the following sections, please close it.
+this buffer. Since we nolonger need the file explorer in the following sections,
+please close it.
 
 Now press `<C-w>v`{normal} to split current window vertically, then `<A-j>`{normal} switch to
 the **event.lua** buffer for the right window. You can use `<A-]>`{normal} and `<A-[>`{normal} 
@@ -107,15 +108,16 @@ the completion window and use `<CR>`{normal} to confirm completion. You can also
 completion but just want to new a line, you can use `<C-e>`{normal} to close the
 window manually.
 
-There are more functions provided by lsp besides code completion. For a former vscode user, you 
-can experienced lots of vscode-like features, i.e., smart rename, find references, 
-goto definition, view docs of some functions etc. No matter you heard about lsp or not, all 
-relevant keymaps are very intuitive, so just try it out!
+There are more functions provided by lsp besides code completion.
+For a former vscode user, you can experienced lots of vscode-like features,
+i.e., smart rename, find references, goto definition, view docs of some
+functions etc. No matter you heard about lsp or not, all relevant keymaps are
+very intuitive, so just try it out!
 
 Snippet is an awesome method to help us write code more productively.
 As most other editors and IDEs, `<Tab>`{normal} and `<S-Tab>`{normal} are configured to
-navigate in expanded snippet, the former keymap is used to jump next and the latter
-to jump previous.
+navigate in expanded snippet, the former keymap is used to jump next and the
+latter to jump previous.
 
 Format on save is a very useful feature which is enabled by default. It can
 ensure the code style is consistent and you don't need to care about it.
@@ -133,10 +135,11 @@ Besides, you can just toggle it for specific language temprarily by executing
 # Lesson 1: SUMMARY
 
 Congratulations! You have learned 60% features nvimdots provided till now.
-Of course you will be curious about where you can master the rest 40%. And the answer
-relies on the basic nvim motions. We enhanced lots of nvim's default abilities that you can
-use those abilities naturally if you were already an experienced nvim user. You can also check
-https://github.com/ayamir/nvimdots/wiki for more!
-
-Last but not least, you can press `<C-p>` in noraml mode to call the command panel then
-search for keymaps any time you want!
+Of course you will be curious about where you can master the rest 40%. And the
+answer relies on the basic nvim motions. We enhanced lots of nvim's default
+abilities that you can use those abilities naturally if you were already an
+experienced nvim user.
+You can also check https://github.com/ayamir/nvimdots/wiki for more!
+
+Last but not least, you can press `<C-p>` in noraml mode to call the command
+panel then search for keymaps any time you want!