docs: fix incorrect return annotations

lib/node_modules/@stdlib/stats/base/dists/beta/logpdf/README.md

@@ -62,7 +62,7 @@ var y = logpdf( 0.5, 0.5, 1.0 );
 // returns ~-0.347
 
 y = logpdf( 0.1, 1.0, 1.0 );
-// returns 0.0
+// returns -0.0
 
 y = logpdf( 0.8, 4.0, 2.0 );
 // returns ~0.717

lib/node_modules/@stdlib/stats/base/dists/beta/logpdf/lib/index.js

@@ -27,7 +27,7 @@
 * var logpdf = require( '@stdlib/stats/base/dists/beta/logpdf' );
 *
 * var y = logpdf( 0.5, 1.0, 1.0 );
-* // returns 0.0
+* // returns -0.0
 *
 * y = logpdf( 0.5, 2.0, 4.0 );
 * // returns ~0.223

lib/node_modules/@stdlib/stats/base/dists/beta/logpdf/lib/main.js

@@ -40,7 +40,7 @@ var NINF = require( '@stdlib/constants/float64/ninf' );
 *
 * @example
 * var y = logpdf( 0.5, 1.0, 1.0 );
-* // returns 0.0
+* // returns -0.0
 *
 * @example
 * var y = logpdf( 0.5, 2.0, 4.0 );

lib/node_modules/@stdlib/stats/base/dists/pareto-type1/logcdf/README.md

@@ -71,7 +71,7 @@ y = logcdf( 1.9, 2.0, 2.0 );
 // returns -Infinity
 
 y = logcdf( +Infinity, 4.0, 2.0 );
-// returns 0.0
+// returns -0.0
 ```
 
 If provided `NaN` as any argument, the function returns `NaN`.

lib/node_modules/@stdlib/stats/base/dists/pareto-type1/logcdf/lib/index.js

@@ -39,7 +39,7 @@
 * // returns -Infinity
 *
 * y = logcdf( +Infinity, 4.0, 2.0 );
-* // returns 0.0
+* // returns -0.0
 *
 * var mylogcdf = logcdf.factory( 10.0, 2.0 );
 * y = mylogcdf( 3.0 );

lib/node_modules/@stdlib/stats/base/dists/pareto-type1/logcdf/lib/main.js

@@ -54,7 +54,7 @@ var NINF = require( '@stdlib/constants/float64/ninf' );
 *
 * @example
 * var y = logcdf( +Infinity, 4.0, 2.0 );
-* // returns 0.0
+* // returns -0.0
 *
 * @example
 * var y = logcdf( 2.0, -1.0, 0.5 );

lib/node_modules/@stdlib/stats/base/dists/uniform/logpdf/README.md

@@ -65,7 +65,7 @@ y = logpdf( 5.0, 0.0, 4.0 );
 // returns -Infinity
 
 y = logpdf( 0.25, 0.0, 1.0 );
-// returns 0.0
+// returns -0.0
 ```
 
 If provided `NaN` as any argument, the function returns `NaN`.
@@ -98,7 +98,7 @@ Returns a `function` for evaluating the logarithm of the [PDF][pdf] of a [contin
 ```javascript
 var mylogPDF = logpdf.factory( 6.0, 7.0 );
 var y = mylogPDF( 7.0 );
-// returns 0.0
+// returns -0.0
 
 y = mylogPDF( 5.0 );
 // returns -Infinity

lib/node_modules/@stdlib/stats/base/dists/uniform/logpdf/lib/index.js

@@ -31,7 +31,7 @@
 *
 * var mylogPDF = logpdf.factory( 6.0, 7.0 );
 * y = mylogPDF( 7.0 );
-* // returns 0.0
+* // returns -0.0
 *
 * y = mylogPDF( 5.0 );
 * // returns -Infinity

lib/node_modules/@stdlib/stats/base/dists/uniform/logpdf/lib/main.js

@@ -45,7 +45,7 @@ var NINF = require( '@stdlib/constants/float64/ninf' );
 *
 * @example
 * var y = logpdf( 0.25, 0.0, 1.0 );
-* // returns 0.0
+* // returns -0.0
 *
 * @example
 * var y = logpdf( NaN, 0.0, 1.0 );

lib/node_modules/@stdlib/stats/base/dists/weibull/logcdf/README.md

@@ -68,7 +68,7 @@ y = logcdf( -Infinity, 4.0, 2.0 );
 // returns -Infinity
 
 y = logcdf( +Infinity, 4.0, 2.0 );
-// returns 0.0
+// returns -0.0
 ```
 
 If provided `NaN` as any argument, the function returns `NaN`.

lib/node_modules/@stdlib/stats/base/dists/weibull/logcdf/lib/main.js

@@ -50,7 +50,7 @@ var NINF = require( '@stdlib/constants/float64/ninf' );
 *
 * @example
 * var y = logcdf( +Infinity, 4.0, 2.0 );
-* // returns 0.0
+* // returns -0.0
 *
 * @example
 * var y = logcdf( -Infinity, 4.0, 2.0 );