spec: fix latex formatting all over the place

Two things worth mentioning:

 - `\em` and `emph` are not supported by MathJax,
 - and things like `\mathcal{C}_0` require escaping the `_`,
   otherwise markdown sees it as the beginning of  `_some string_`.
   It doesn't happen without the closing bracket in front, e.g. in `b_0`.

1 files changed, 2 insertions, 2 deletions

diff --git a/spec/01-lexical-syntax.md b/spec/01-lexical-syntax.md
index 6c8712cda2..ef1f2bf053 100644
--- a/spec/01-lexical-syntax.md
+++ b/spec/01-lexical-syntax.md
@@ -429,7 +429,7 @@ by an [escape sequence](#escape-sequences).
 
 Note that `'\u000A'` is _not_ a valid character literal because
 Unicode conversion is done before literal parsing and the Unicode
-character \\u000A (line feed) is not a printable
+character `\u000A` (line feed) is not a printable
 character. One can use instead the escape sequence `'\n'` or
 the octal escape `'\12'` ([see here](#escape-sequences)).
 
@@ -528,7 +528,7 @@ The following escape sequences are recognized in character and string literals.
 
 
 A character with Unicode between 0 and 255 may also be represented by
-an octal escape, i.e. a backslash ‘\’ followed by a
+an octal escape, i.e. a backslash `'\'` followed by a
 sequence of up to three octal characters.
 
 It is a compile time error if a backslash character in a character or