Fix formatting in searching.md for clarity

Author: djeada

notes/searching.md

@@ -1370,8 +1370,8 @@ h1(cat) = 3,  h2(cat) = 7,  h3(cat) = 12
 
 Idx:   0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
 A  =  [0  0  0  1  0  0  0  1  0  0  0  0  1  0  0  0]
-                 ^              ^              ^
-                 3              7              12
+                ^              ^              ^
+                3              7              12
 ```
 
 Insert `"dog"`
@@ -1382,8 +1382,8 @@ h1(dog) = 1,  h2(dog) = 7,  h3(dog) = 9
 
 Idx:   0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
 A  =  [0  1  0  1  0  0  0  1  0  1  0  0  1  0  0  0]
-           ^              ^       ^
-           1              7       9
+          ^              ^     ^
+          1              7     9
 ```
 
 Query `"cow"`
@@ -1395,7 +1395,7 @@ h3(cow) = 6 → bit[6] = 0  ❌
 
 Idx:   0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
 A  =  [0  1  0  1  0  0  0  1  0  1  0  0  1  0  0  0]
-           ✓              ✓     ✗
+          ✓              ✓     ✗
 ```
 
 At least one zero → **DEFINITELY NOT PRESENT**
@@ -1409,7 +1409,7 @@ h3(eel) = 12 → bit[12] = 1
 
 Idx:   0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
 A  =  [0  1  0  1  0  0  0  1  0  1  0  0  1  0  0  0]
-                             ✓     ✓        ✓
+                            ✓     ✓        ✓
 ```
 
 All ones → **MAYBE PRESENT** (could be a **false positive**)