Update unary doc examples set3 (#15425)

### Ticket
#14982 

### Problem description
Provided example tensors are inconsistent with the ops.
Currently we support device operations for ranks >= 2 as per doc for
most ops. However, the example tensors in the docs are 1D tensors.

### What's changed
- Updated and tested examples to create 2D tensors in documentation that
are consistent with unary ops
- Updated supported params
- Added unary_chain, dropout, pow under Pointwise Unary documentation

No. of Ops: 17

### Checklist
- [x] [Post commit CI
passes](https://github.com/tenstorrent/tt-metal/actions/runs/12017503786)

docs/source/ttnn/ttnn/api.rst

@@ -114,6 +114,7 @@ Pointwise Unary
    ttnn.cosh
    ttnn.deg2rad
    ttnn.digamma
+   ttnn.dropout
    ttnn.elu
    ttnn.eqz
    ttnn.erf
@@ -161,6 +162,7 @@ Pointwise Unary
    ttnn.normalize_global
    ttnn.normalize_hw
    ttnn.polygamma
+   ttnn.pow
    ttnn.prelu
    ttnn.rad2deg
    ttnn.rdiv
@@ -197,6 +199,7 @@ Pointwise Unary
    ttnn.tril
    ttnn.triu
    ttnn.trunc
+   ttnn.unary_chain
    ttnn.clamp_bw
    ttnn.clip_bw
    ttnn.hardtanh_bw
@@ -305,7 +308,6 @@ Pointwise Binary
    ttnn.logical_and_
    ttnn.logical_or_
    ttnn.logical_xor_
-   ttnn.pow
    ttnn.rpow
    ttnn.ldexp
    ttnn.logical_and