remove mkdocs specific syntax

docs/misc/regular-expressions.md

@@ -40,7 +40,7 @@ A **character class** matches any one of a set of characters.
 
 ### Subexpressions
 
-```regex title="Regex Syntax" linenums="1"
+```regex title="Regex Syntax"
 (subexpression)
 ```
 
@@ -66,7 +66,7 @@ It's possible to access the captured group in the following ways:
 
 ### Named Subexpressions
 
-```regex title="Regex Syntax" linenums="1"
+```regex title="Regex Syntax"
 (?<name> subexpression)
 (?'name' subexpression)
 ```
@@ -90,7 +90,7 @@ It's possible to access the named captured group in the following ways:
 
 ### Noncapturing groups
 
-```regex title="Regex Syntax" linenums="1"
+```regex title="Regex Syntax"
 (?:subexpression)
 ```
 
@@ -98,7 +98,7 @@ The *subexpression* is any valid regular expression pattern. The noncapturing gr
 
 ### Zero-width positive lookahead assertions
 
-```regex title="Regex Syntax" linenums="1"
+```regex title="Regex Syntax"
 (?= subexpression)
 ```
 
@@ -110,7 +110,7 @@ It's possible to use a zero-width positive lookahead assertion to ensure that a
 
 ### Zero-width negative lookahead assertions
 
-```regex title="Regex Syntax" linenums="1"
+```regex title="Regex Syntax"
 (?! subexpression)
 ```
 
@@ -120,7 +120,7 @@ A zero-width negative lookahead assertion is typically used either at the beginn
 
 ### Zero-width positive lookbehind assertions
 
-```regex title="Regex Syntax" linenums="1"
+```regex title="Regex Syntax"
 (?<= subexpression)
 ```
 
@@ -130,7 +130,7 @@ Zero-width positive lookbehind assertions are typically used at the beginning of
 
 ### Zero-width negative lookbehind assertions
 
-```regex title="Regex Syntax" linenums="1"
+```regex title="Regex Syntax"
 (?<! subexpression)
 (?> subexpression)
 ```
@@ -141,7 +141,7 @@ Zero-width negative lookbehind assertions are typically used at the beginning of
 
 ### Atomic groups
 
-```regex title="Regex Syntax" linenums="1"
+```regex title="Regex Syntax"
 (?> subexpression )
 ```