Reformat docstrings in plotting.py to Google style

Updated all function docstrings in plotting.py to follow Google-style formatting for consistency with the rest of the project. 
Removed the previous NumPy-style section headers ("Parameters", "Returns") and replaced them with "Args" and "Returns" blocks. 
Also ensured that no external or unrelated library references remain.

Author: Iqbal-dev12

cdippy/plotting.py

@@ -6,17 +6,12 @@ def make_annual_hs_boxplot(stn: str, year: int) -> Figure:
     """
     Create a boxplot of annual significant wave heights for a given station and year.
 
-    Parameters
-    ----------
-    stn : str
-        A 5-character station identifier, e.g., '100p1'.
-    year : int
-        The year for which the boxplot is generated.
+    Args:
+        stn (str): A 5-character station identifier, e.g., '100p1'.
+        year (int): The year for which the boxplot is generated.
 
-    Returns
-    -------
-    fig : Figure
-        A matplotlib Figure object representing the annual wave height boxplot.
+    Returns:
+        Figure: A matplotlib Figure object representing the annual wave height boxplot.
     """
     return plots.annual_hs_boxplot.make_plot(stn, year)
 
@@ -27,23 +22,15 @@ def make_compendium_plot(
     """
     Generate CDIP's compendium plot for multiple stations and parameters over a time range.
 
-    Parameters
-    ----------
-    stns : str
-        Comma-delimited list of 5-character station identifiers, e.g., '100p1,201p1'.
-    start : str
-        Start time formatted as 'yyyymm[ddHHMMss]'; optional components default to zero.
-    end : str
-        End time formatted as 'yyyymm[ddHHMMss]'. If None, defaults to current date/time.
-    params : str
-        Comma-delimited string of parameter names, e.g., 'waveHs,waveTp'.
-    x_inch : int
-        Width of the figure in inches.
+    Args:
+        stns (str): Comma-delimited list of 5-character station identifiers, e.g., '100p1,201p1'.
+        start (str): Start time formatted as 'yyyymm[ddHHMMss]'; optional components default to zero.
+        end (str): End time formatted as 'yyyymm[ddHHMMss]'. If None, defaults to current date/time.
+        params (str): Comma-delimited string of parameter names, e.g., 'waveHs,waveTp'.
+        x_inch (int): Width of the figure in inches.
 
-    Returns
-    -------
-    fig : Figure
-        A matplotlib Figure object representing the compendium plot.
+    Returns:
+        Figure: A matplotlib Figure object representing the compendium plot.
     """
     return plots.compendium.make_plot(stns, start, end, params, x_inch)
 
@@ -54,18 +41,12 @@ def make_sst_climatology_plot(
     """
     Plot the yearly climatology of sea surface temperature for a given station over all available years.
 
-    Parameters
-    ----------
-    stn : str
-        A 5-character station identifier, e.g., '100p1'.
-    x_inch : int, optional
-        Width of the figure in inches. Default is None.
-    y_inch : int, optional
-        Height of the figure in inches. Default is None.
+    Args:
+        stn (str): A 5-character station identifier, e.g., '100p1'.
+        x_inch (int, optional): Width of the figure in inches. Defaults to None.
+        y_inch (int, optional): Height of the figure in inches. Defaults to None.
 
-    Returns
-    -------
-    fig : Figure
-        A matplotlib Figure object representing the SST climatology plot.
+    Returns:
+        Figure: A matplotlib Figure object representing the SST climatology plot.
     """
     return plots.sst_climatology.make_plot(stn, x_inch, y_inch)