Update cheatsheets

tldr/nvim

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # nvim
 
 > Neovim, a programmer's text editor based on Vim, provides several modes for different kinds of text manipulation.
-> Pressing `i` in normal mode enters insert mode. `<Esc>` goes back to normal mode, which doesn't allow regular text insertion.
+> Pressing `<i>` in normal mode enters insert mode. `<Esc>` or `<Ctrl c>` goes back to normal mode, which doesn't allow regular text insertion.
 > See also: `vim`, `vimtutor`, `vimdiff`.
 > More information: <https://neovim.io>.
 
@@ -16,28 +16,28 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Enter text editing mode (insert mode):
 
-`<Esc>i`
+`<Esc><i>`
 
-- Copy ("yank") or cut ("delete") the current line (paste it with `P`):
+- Copy ("yank") or cut ("delete") the current line (paste it with `<p>`):
 
-`<Esc>{{yy|dd}}`
+`<Esc>{{<y><y>|<d><d>}}`
 
 - Enter normal mode and undo the last operation:
 
-`<Esc>u`
+`<Esc><u>`
 
-- Search for a pattern in the file (press `n`/`N` to go to next/previous match):
+- Search for a pattern in the file (press `<n>`/`<N>` to go to next/previous match):
 
-`<Esc>/{{search_pattern}}<Enter>`
+`<Esc></>{{search_pattern}}<Enter>`
 
 - Perform a regular expression substitution in the whole file:
 
-`<Esc>:%s/{{regular_expression}}/{{replacement}}/g<Enter>`
+`<Esc><:>%s/{{regular_expression}}/{{replacement}}/g<Enter>`
 
 - Enter normal mode and save (write) the file, and quit:
 
-`{{<Esc>ZZ|<Esc>:x<Enter>|<Esc>:wq<Enter>}}`
+`{{<Esc><Z><Z>|<Esc><:>x<Enter>|<Esc><:>wq<Enter>}}`
 
 - Quit without saving:
 
-`<Esc>:q!<Enter>`
+`<Esc><:>q!<Enter>`