Fix method doc signatures for multiline required parameters (#374)

* Fix method doc signatures for multiline required parameters.

Existing doc generator failed to recognize parameters as required when parameter descriptions
extended over more than one line. Besides presenting incorrect information, resulting
inconsistencies broke checks for automated sample generation.

* Regen docs
diff --git a/docs/dyn/sheets_v4.spreadsheets.values.html b/docs/dyn/sheets_v4.spreadsheets.values.html
index 613e7d1..7cb7002 100644
--- a/docs/dyn/sheets_v4.spreadsheets.values.html
+++ b/docs/dyn/sheets_v4.spreadsheets.values.html
@@ -75,7 +75,7 @@
 <h1><a href="sheets_v4.html">Google Sheets API</a> . <a href="sheets_v4.spreadsheets.html">spreadsheets</a> . <a href="sheets_v4.spreadsheets.values.html">values</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
-  <code><a href="#append">append(spreadsheetId, range=None, body, valueInputOption=None, x__xgafv=None, responseValueRenderOption=None, insertDataOption=None, includeValuesInResponse=None, responseDateTimeRenderOption=None)</a></code></p>
+  <code><a href="#append">append(spreadsheetId, range, body, valueInputOption=None, x__xgafv=None, responseValueRenderOption=None, insertDataOption=None, includeValuesInResponse=None, responseDateTimeRenderOption=None)</a></code></p>
 <p class="firstline">Appends values to a spreadsheet. The input range is used to search for</p>
 <p class="toc_element">
   <code><a href="#batchClear">batchClear(spreadsheetId, body, x__xgafv=None)</a></code></p>
@@ -97,7 +97,7 @@
 <p class="firstline">Sets values in a range of a spreadsheet.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="append">append(spreadsheetId, range=None, body, valueInputOption=None, x__xgafv=None, responseValueRenderOption=None, insertDataOption=None, includeValuesInResponse=None, responseDateTimeRenderOption=None)</code>
+    <code class="details" id="append">append(spreadsheetId, range, body, valueInputOption=None, x__xgafv=None, responseValueRenderOption=None, insertDataOption=None, includeValuesInResponse=None, responseDateTimeRenderOption=None)</code>
   <pre>Appends values to a spreadsheet. The input range is used to search for
 existing data and find a "table" within that range. Values will be
 appended to the next row of the table, starting with the first column of
@@ -453,9 +453,9 @@
         "updatedCells": 42, # The number of cells updated.
       },
     ],
-    "totalUpdatedCells": 42, # The total number of cells updated.
     "totalUpdatedColumns": 42, # The total number of columns where at least one cell in the column was
         # updated.
+    "totalUpdatedCells": 42, # The total number of cells updated.
     "totalUpdatedRows": 42, # The total number of rows where at least one cell in the row was updated.
     "spreadsheetId": "A String", # The spreadsheet the updates were applied to.
     "totalUpdatedSheets": 42, # The total number of sheets where at least one cell in the sheet was