Typos in README

README.md

@@ -50,17 +50,14 @@ theory (this is equivalent to $`\alpha_{\overline{\rm MS}
 }^{(5)}(M_Z) \approx 0.1185`$). Then the software prooceeds as follows
 1. The basic perturbative relation 
    ```math 
-   O(Q) = \alpha_{\overline{\rm MS} }(s\mu) + \sum_{k=2}^{n_l} c_k(s)
-  \alpha_{\overline{\rm MS} }^k(\mu) + ...
+   O(Q) = \alpha_{\overline{\rm MS} }(s\mu) + \sum_{k=2}^{n_l} c_k(s)  \alpha_{\overline{\rm MS} }^k(\mu) + ...
    ```
    is constructed from the input perturbative coefficients $`c_n(1)`$.
 1. The value $`O_{\rm ref}(Q)`$ where the extraction of
    $`\alpha_s`$ takes place is computed from the previous epression and
    a  reference value $`s_{\rm ref}`$:
    ```math 
-   O_{\rm ref}(Q) = \alpha_{\overline{\rm MS} }(s_{\rm ref}\mu) +
-   \sum_{k=2}^{n_l} c_k(s_{\rm ref})
-  \alpha_{\overline{\rm MS} }^k(s_{\rm ref}\mu)
+   O_{\rm ref}(Q) = \alpha_{\overline{\rm MS} }(s_{\rm ref}\mu) + \sum_{k=2}^{n_l} c_k(s_{\rm ref}) \alpha_{\overline{\rm MS} }^k(s_{\rm ref}\mu)
    ```
 1. The values of $`\alpha_{\overline{\rm MS} }(s\mu)`$ are extracted
    from $`O_{\rm ref}`$ for different choices of $`s`$ from the basic