chore: fix README sections and return annotations spacing

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: passed
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: passed
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: passed
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: Planeshifter

lib/node_modules/@stdlib/constants/float16/ln-half/README.md

@@ -60,6 +60,12 @@ console.log( FLOAT16_LN_HALF );
 
 </section>
 
+<!-- /.examples -->
+
+<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
+
+<section class="related">
+
 </section>
 
 <!-- /.related -->

lib/node_modules/@stdlib/constants/float16/ln-ten/README.md

@@ -55,15 +55,13 @@ var bool = ( FLOAT16_LN10 === 2.302734375 );
 var FLOAT16_LN10 = require( '@stdlib/constants/float16/ln-ten' );
 
 console.log( FLOAT16_LN10 );
-// =>  2.302734375
+// => 2.302734375
 ```
 
 </section>
 
 <!-- /.examples -->
 
-<!-- /.examples -->
-
 <!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
 
 <section class="related">

lib/node_modules/@stdlib/constants/float16/ln-ten/lib/index.js

@@ -26,7 +26,7 @@
 *
 * @example
 * var FLOAT16_LN10 = require( '@stdlib/constants/float16/ln-ten' );
-* // returns  2.302734375
+* // returns 2.302734375
 */
 
 

lib/node_modules/@stdlib/constants/float16/ln-two-pi/README.md

@@ -62,8 +62,6 @@ console.log( FLOAT16_LN_TWO_PI );
 
 <!-- /.examples -->
 
-</section>
-
 <!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
 
 <section class="related">

lib/node_modules/@stdlib/constants/float16/ln-two/README.md

@@ -60,10 +60,6 @@ console.log( FLOAT16_LN2 );
 
 <!-- /.examples -->
 
-<section class="examples">
-
-</section>
-
 <!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
 
 <section class="related">