docs: add missing periods

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Author: Planeshifter

lib/node_modules/@stdlib/blas/base/dgemm/README.md

@@ -58,7 +58,7 @@ The function has the following parameters:
 -   **lda**: stride of the first dimension of `A` (leading dimension of `A`).
 -   **B**: second input matrix stored in linear memory as a [`Float64Array`][mdn-float64array].
 -   **ldb**: stride of the first dimension of `B` (leading dimension of `B`).
--   **β**: scalar constant
+-   **β**: scalar constant.
 -   **C**: third input matrix stored in linear memory as a [`Float64Array`][mdn-float64array].
 -   **ldc**: stride of the first dimension of `C` (leading dimension of `C`).
 

lib/node_modules/@stdlib/complex/float64/base/mul-add/README.md

@@ -56,7 +56,7 @@ var v = muladd( z1, z2, z3 );
 
 The function supports the following parameters:
 
--   **alpha**: first [complex number][@stdlib/complex/float64/ctor]
+-   **alpha**: first [complex number][@stdlib/complex/float64/ctor].
 -   **x**: second [complex number][@stdlib/complex/float64/ctor].
 -   **y**: third [complex number][@stdlib/complex/float64/ctor].