rg: update title to match page name; improve examples (#5091)

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

pages/common/rg.md

@@ -1,6 +1,6 @@
-# ripgrep
+# rg
 
-> A recursive line-oriented CLI search tool.
+> Ripgrep is a recursive line-oriented CLI search tool.
 > Aims to be a faster alternative to `grep`.
 > More information: <https://github.com/BurntSushi/ripgrep>.
 
@@ -10,11 +10,11 @@
 
 - Search for pattern including all .gitignored and hidden files:
 
-`rg -uu {{pattern}}`
+`rg --no-ignore --hidden {{pattern}}`
 
 - Search for a pattern only in a certain filetype (e.g., html, css, etc.):
 
-`rg -t {{filetype}} {{pattern}}`
+`rg --type {{filetype}} {{pattern}}`
 
 - Search for a pattern only in a subset of directories:
 
@@ -22,7 +22,7 @@
 
 - Search for a pattern in files matching a glob (e.g., `README.*`):
 
-`rg {{pattern}} -g {{glob}}`
+`rg {{pattern}} --glob {{glob}}`
 
 - Only list matched files (useful when piping to other commands):
 
@@ -34,4 +34,4 @@
 
 - Search a literal string pattern:
 
-`rg -F {{string}}`
+`rg --fixed-strings {{string}}`