chore: remove space

Author: Neerajpathak07

lib/node_modules/@stdlib/stats/base/dists/gamma/mgf/README.md

@@ -205,7 +205,7 @@ The function accepts the following arguments:
 
 -   **t**: `[in] double` input value.
 -   **alpha**: `[in] double` shape parameter.
--   **beta**:  `[in] double` rate parameter.
+-   **beta**: `[in] double` rate parameter.
 
 ```c
 double stdlib_base_dists_gamma_mgf( const double t, const double alpha, const double beta );

lib/node_modules/@stdlib/stats/base/dists/gamma/mgf/include/stdlib/stats/base/dists/gamma/mgf.h

@@ -27,7 +27,7 @@ extern "C" {
 #endif
 
 /**
-* Evaluates the  moment-generating function (MGF) for a gamma distribution with shape parameter `alpha` and rate parameter 'beta`.
+* Evaluates the moment-generating function (MGF) for a gamma distribution with shape parameter `alpha` and rate parameter 'beta`.
 */
 double stdlib_base_dists_gamma_mgf( const double t, const double alpha, const double beta );