docs: update examples to reflect the returned workspace array

---
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: passed
  - 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: skipped
  - task: lint_license_headers
    status: passed
---

Author: gunjjoshi

lib/node_modules/@stdlib/fft/base/fftpack/rffti/README.md

@@ -50,7 +50,11 @@ var Float64Array = require( '@stdlib/array/float64' );
 var N = 8;
 var workspace = new Float64Array( ( 2*N ) + 34 );
 
-rffti( N, workspace, 1, 0 );
+var out = rffti( N, workspace, 1, 0 );
+// returns <Float64Array>
+
+var bool = ( out === workspace );
+// returns true
 
 var twiddleFactors = workspace.slice( N, 2*N );
 // returns <Float64Array>[ 0, ~0.707, ~0.707, 0, 0, 0, 0, 0 ]

lib/node_modules/@stdlib/fft/base/fftpack/rffti/docs/repl.txt

@@ -42,7 +42,10 @@
     > var {{alias:@stdlib/array/float64}} = require( '@stdlib/array/float64' );
     > var N = 8;
     > var workspace = new {{alias:@stdlib/array/float64}}( ( 2*N ) + 34 );
-    > {{alias}}( N, workspace, 1, 0 );
+    > var out = {{alias}}( N, workspace, 1, 0 )
+    <Float64Array>
+    > var bool = ( out === workspace )
+    true
     > var twiddleFactors = workspace.slice( N, 2*N )
     <Float64Array>[ 0, ~0.707, ~0.707, 0, 0, 0, 0, 0 ]
     > var factors = workspace.slice( 2*N, ( 2*N ) + 4 )

lib/node_modules/@stdlib/fft/base/fftpack/rffti/docs/types/index.d.ts

@@ -37,7 +37,11 @@ import { Collection } from '@stdlib/types/array';
 * var N = 8;
 * var workspace = new Float64Array( ( 2*N ) + 34 );
 *
-* rffti( N, workspace, 1, 0 );
+* var out = rffti( N, workspace, 1, 0 );
+* // returns <Float64Array>
+*
+* var bool = ( out === workspace );
+* // returns true
 *
 * var twiddleFactors = workspace.slice( N, 2*N );
 * // returns <Float64Array>[ 0, ~0.707, ~0.707, 0, 0, 0, 0, 0 ]

lib/node_modules/@stdlib/fft/base/fftpack/rffti/lib/index.js

@@ -30,7 +30,11 @@
 * var N = 8;
 * var workspace = new Float64Array( ( 2*N ) + 34 );
 *
-* rffti( N, workspace, 1, 0 );
+* var out = rffti( N, workspace, 1, 0 );
+* // returns <Float64Array>
+*
+* var bool = ( out === workspace );
+* // returns true
 *
 * var twiddleFactors = workspace.slice( N, 2*N );
 * // returns <Float64Array>[ 0, ~0.707, ~0.707, 0, 0, 0, 0, 0 ]

lib/node_modules/@stdlib/fft/base/fftpack/rffti/lib/main.js

@@ -140,7 +140,11 @@ var rffti1 = require( './rffti1.js' );
 * var N = 8;
 * var workspace = new Float64Array( ( 2*N ) + 34 );
 *
-* rffti( N, workspace, 1, 0 );
+* var out = rffti( N, workspace, 1, 0 );
+* // returns <Float64Array>
+*
+* var bool = ( out === workspace );
+* // returns true
 *
 * var twiddleFactors = workspace.slice( N, 2*N );
 * // returns <Float64Array>[ 0, ~0.707, ~0.707, 0, 0, 0, 0, 0 ]