Reformat Terce/Sext/None capitulum text as multi-line block scalars

Every capitulum-*.yml under the three Little Hours combined the chapter,
"R. Deo grátias"/"Thanks be to God", and the trailing V./R. pair into one
flat single-line string. The .lang-column CSS already renders on
white-space: pre-line (as little-hour-conclusio.yml's block-scalar text
already demonstrated), so the run-together rendering was purely a missing
line-break bug in the source YAML, not a CSS or resolver issue.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PXySSbbUh1EhdN1RnAoCaP

src/data/propers/common/terce-capitulum-nativity-of-st-john-the-baptist.yml

@@ -3,8 +3,16 @@
 # clean year).
 id: terce-capitulum-nativity-of-st-john-the-baptist
 text:
-  la: "Audíte, ínsulæ, et atténdite, pópuli de longe: Dóminus ab útero vocávit me, de ventre matris meæ recordátus est nóminis mei. R. Deo grátias. V. Fuit homo missus a Deo. R. Cui nomen erat Joánnes."
-  en: "Give ear, ye islands, and hearken, ye people from afar. The Lord hath called me from the womb, from the bowels of my mother he hath been mindful of my name. R. Thanks be to God. V. There was a man sent from God. R. Whose name was John."
+  la: |
+    Audíte, ínsulæ, et atténdite, pópuli de longe: Dóminus ab útero vocávit me, de ventre matris meæ recordátus est nóminis mei.
+    R. Deo grátias.
+    V. Fuit homo missus a Deo.
+    R. Cui nomen erat Joánnes.
+  en: |
+    Give ear, ye islands, and hearken, ye people from afar. The Lord hath called me from the womb, from the bowels of my mother he hath been mindful of my name.
+    R. Thanks be to God.
+    V. There was a man sent from God.
+    R. Whose name was John.
 citation:
   la: "Isa 49:1"
   en: "Isa 49:1"