docs: add missing headings and add missing placeholder section

lib/node_modules/@stdlib/blas/base/dnrm2/package.json

@@ -70,6 +70,7 @@
     "length",
     "vector",
     "array",
+    "ndarray",
     "float64",
     "double",
     "float64array"

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

@@ -76,6 +76,8 @@ var bool = ( y === out );
 
 <section class="examples">
 
+## Examples
+
 ```javascript
 var discreteUniform = require( '@stdlib/random/base/discrete-uniform' );
 var drotg = require( '@stdlib/blas/base/drotg' );

lib/node_modules/@stdlib/blas/base/gnrm2/package.json

@@ -66,7 +66,8 @@
     "distance",
     "length",
     "vector",
-    "array"
+    "array",
+    "ndarray"
   ],
   "__stdlib__": {}
 }

lib/node_modules/@stdlib/blas/base/gswap/package.json

@@ -64,6 +64,7 @@
     "interchange",
     "vector",
     "array",
+    "ndarray",
     "typed array"
   ],
   "__stdlib__": {}

lib/node_modules/@stdlib/blas/base/snrm2/package.json

@@ -70,6 +70,7 @@
     "length",
     "vector",
     "array",
+    "ndarray",
     "float32",
     "float",
     "float32array"

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

@@ -76,6 +76,8 @@ var bool = ( y === out );
 
 <section class="examples">
 
+## Examples
+
 ```javascript
 var discreteUniform = require( '@stdlib/random/base/discrete-uniform' );
 var srotg = require( '@stdlib/blas/base/srotg' );

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

@@ -295,6 +295,14 @@ int main( void ) {
 
 <!-- /.c -->
 
+<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
+
+<section class="related">
+
+</section>
+
+<!-- /.related -->
+
 <!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
 
 <section class="links">