Checkdoc fixes in Org Mode

Checkdoc fixes in Org Mode

* lisp/org/ob-core.el:
* lisp/org/ob-exp.el:
* lisp/org/ob-lob.el:
* lisp/org/ob-plantuml.el (org-babel-execute:plantuml):
* lisp/org/ob-python.el (org-babel-python--command)
(org-babel-python-initiate-session-by-key)
(org-babel-python-initiate-session):
* lisp/org/ob-scheme.el (org-babel-scheme-make-session-name):
* lisp/org/ob-tangle.el (org-babel-find-file-noselect-refresh)
(org-babel-interpret-file-mode):
* lisp/org/ob.el:
* lisp/org/org-agenda.el (org-agenda-mouse-1-follows-link)
(org-agenda-start-with-archives-mode)
(org-agenda-previous-line):
* lisp/org/org-clock.el (org-clock-save, org-clock-load):
* lisp/org/org-element-ast.el (org-element-type-p):
* lisp/org/org-faces.el (org-cycle-level-faces):
* lisp/org/org-fold-core.el (org-fold-core--isearch-overlays):
* lisp/org/org-fold.el (org-fold--extend-changed-region):
* lisp/org/org-goto.el:
* lisp/org/org-habit.el (org-habit-show-all-today):
* lisp/org/org-inlinetask.el (org-inlinetask-in-task-p):
* lisp/org/org-macs.el (org-current-text-column):
* lisp/org/org-mobile.el (org-mobile-check-setup):
* lisp/org/org-mouse.el (org-mouse-bolp):
* lisp/org/org-refile.el (org-refile):
* lisp/org/org-src.el (org-src-do-key-sequence-at-code-block):
* lisp/org/org-table.el (orgtbl-after-send-table-hook)
(orgtbl-self-insert-command, orgtbl-to-orgtbl):
* lisp/org/org.el (org-read-date-popup-calendar, org-finish-function)
(org-occur-parameters, org-self-insert-command, org-ctrl-c-ctrl-c-hook)
(org-ctrl-c-ctrl-c-final-hook, org-submit-bug-report)
(org--single-lines-list-is-paragraph):
* lisp/org/ox-icalendar.el (org-icalendar--vtodo):
* lisp/org/ox-latex.el (org-latex-generate-engraved-preamble):
(org-latex-src--engrave-code):
* lisp/org/ox-publish.el (org-publish-project-alist):
* lisp/org/ox.el (org-export-data): Various checkdoc fixes.

(cherry picked from commit 6757f8e67d3bdfe338810fc26408a62e7839afe7)