docs(readme): fix typos

README.md

@@ -186,7 +186,7 @@ same order. These arguments can be of two types:
 
 Some functions then extend these inputs by using various optional arguments.
 
-### extendpolar
+#### extendpolar
 
 This function extends known $`C_l`$ and $`C_d`$ polars to the full range of
 angle of attacks [-180; 180]. This is especially useful when studying rotors and
@@ -207,10 +207,10 @@ import af_tools.extendpolar
 | 'method' | `'Viterna'`        | `'Viterna'` |
 | 'limit'  | `'stall','limit'`  | `'last'`    |
 
-### plotpolars
+#### plotpolars
 
-Plots the following polars: $`C_l-\alpha`  ,   $`C_d-\alpha`$
- ,   $`C_m-\alpha`$  ,   $`C_l/C_d-\alpha`
+Plots the following polars: $`C_l-\alpha`$  ,   $`C_d-\alpha`$
+ ,   $`C_m-\alpha`$  ,   $`C_l/C_d-\alpha`$
  ,   $`C_l-C_d`$.
 
 ```matlab
@@ -220,7 +220,7 @@ plotpolars(Polar)
 plotpolars(alpha, cl, cd, cm)
 ```
 
-### findstall
+#### findstall
 
 Finds the stall angle of attack and the associated $`C_l`$ and $`C_d`$.
 
@@ -231,7 +231,7 @@ import af_tools.findstall
 [alpha_s, cl_s, cd_s] = findstall(alpha, cl, cd)
 ```
 
-### findzerolift
+#### findzerolift
 
 Finds the zero-lift angle of attack and the associated $`C_d`$.
 
@@ -242,7 +242,7 @@ import af_tools.findzerolift
 [alpha_zeroL, cd_zeroL] = findzerolift(alpha, cl, cd)
 ```
 
-### findcllinearrange
+#### findcllinearrange
 
 Finds the range of angles of attack for which the $`C_l`$ can be considered
 linear.