minor updates

Author: hi-im-buggy

README.md

@@ -59,7 +59,7 @@ $$f(x) = \|2 \times x + 1\|$$
 This works:
 ```
 $\frac{a}{b}$
-```  
+```
 This might not:
 ```
 $ \frac{a}{b} $

_posts/2020-11-07-ds-lecture-23.md

@@ -5,9 +5,6 @@ code: ma5.101
 number: 23
 ---
 
-# MA5.101 - Discrete Structures | Lecture 023 | 07 Nov 202
-with Prof Ashok Kumar Das
-
 ## Definitions
 1. **Idempotence** (elements)**.** Let $\langle S, \cdot \rangle$ be a structure. An element $x \in S$ is said to be *idempotent* if $x \cdot x = x^{2} = x$.
 

assets/css/main.css

@@ -11,7 +11,7 @@ body {
 }
 
 p {
-    font-family: serif, Arial, Helvetica, sans-serif;
+    font-family: Georgia, serif;
 }
 
 h1 {